Home / 81,424,016.80-122,136,025.20-57,190,307.20

Finding the Fourth Proportional to 81,424,016.80, 122,136,025.20 and 57,190,307.20

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Solution

The fourth proportional to 81,424,016.80, 122,136,025.20 and 57,190,307.20 is: 85,785,460.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424,016.80 : 122,136,025.20 = 57,190,307.20 : x
  2. Step 2: Convert to fraction form
    81,424,016.80/122,136,025.20 = 57,190,307.20/x
  3. Step 3: Cross multiply
    81,424,016.80x = 122,136,025.20 × 57,190,307.20
  4. Step 4: Simplify right side
    81,424,016.80x = 6,984,996,801,374,942
  5. Step 5: Solve for x
    x = 6,984,996,801,374,942/81,424,016.80
  6. Step 6: Final answer
    x = 85,785,460.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.