Home / 81,424,010.30-122,136,015.45-57,190,300.70

Finding the Fourth Proportional to 81,424,010.30, 122,136,015.45 and 57,190,300.70

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Solution

The fourth proportional to 81,424,010.30, 122,136,015.45 and 57,190,300.70 is: 85,785,451.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424,010.30 : 122,136,015.45 = 57,190,300.70 : x
  2. Step 2: Convert to fraction form
    81,424,010.30/122,136,015.45 = 57,190,300.70/x
  3. Step 3: Cross multiply
    81,424,010.30x = 122,136,015.45 × 57,190,300.70
  4. Step 4: Simplify right side
    81,424,010.30x = 6,984,995,449,885,346
  5. Step 5: Solve for x
    x = 6,984,995,449,885,346/81,424,010.30
  6. Step 6: Final answer
    x = 85,785,451.05

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Double scale
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Similar ratio
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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.