Home / 81,424,008.30-122,136,012.45-57,190,298.70

Finding the Fourth Proportional to 81,424,008.30, 122,136,012.45 and 57,190,298.70

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Solution

The fourth proportional to 81,424,008.30, 122,136,012.45 and 57,190,298.70 is: 85,785,448.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424,008.30 : 122,136,012.45 = 57,190,298.70 : x
  2. Step 2: Convert to fraction form
    81,424,008.30/122,136,012.45 = 57,190,298.70/x
  3. Step 3: Cross multiply
    81,424,008.30x = 122,136,012.45 × 57,190,298.70
  4. Step 4: Simplify right side
    81,424,008.30x = 6,984,995,034,042,419
  5. Step 5: Solve for x
    x = 6,984,995,034,042,419/81,424,008.30
  6. Step 6: Final answer
    x = 85,785,448.05

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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.