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Finding the Fourth Proportional to 71,966,672.02, 99,305,472.66 and 40,602,892.55

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Solution

The fourth proportional to 71,966,672.02, 99,305,472.66 and 40,602,892.55 is: 56,027,176.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,966,672.02 : 99,305,472.66 = 40,602,892.55 : x
  2. Step 2: Convert to fraction form
    71,966,672.02/99,305,472.66 = 40,602,892.55/x
  3. Step 3: Cross multiply
    71,966,672.02x = 99,305,472.66 × 40,602,892.55
  4. Step 4: Simplify right side
    71,966,672.02x = 4,032,089,436,040,942
  5. Step 5: Solve for x
    x = 4,032,089,436,040,942/71,966,672.02
  6. Step 6: Final answer
    x = 56,027,176.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.