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Finding the Fourth Proportional to 29,129,978.70, 43,694,968.05 and 9,959,028.30

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Solution

The fourth proportional to 29,129,978.70, 43,694,968.05 and 9,959,028.30 is: 14,938,542.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,129,978.70 : 43,694,968.05 = 9,959,028.30 : x
  2. Step 2: Convert to fraction form
    29,129,978.70/43,694,968.05 = 9,959,028.30/x
  3. Step 3: Cross multiply
    29,129,978.70x = 43,694,968.05 × 9,959,028.30
  4. Step 4: Simplify right side
    29,129,978.70x = 435,159,423,377,545.81
  5. Step 5: Solve for x
    x = 435,159,423,377,545.81/29,129,978.70
  6. Step 6: Final answer
    x = 14,938,542.45

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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.