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Finding the Fourth Proportional to 61,292.78, 91,892.44 and 31,691.74

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Solution

The fourth proportional to 61,292.78, 91,892.44 and 31,691.74 is: 47,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,292.78 : 91,892.44 = 31,691.74 : x
  2. Step 2: Convert to fraction form
    61,292.78/91,892.44 = 31,691.74/x
  3. Step 3: Cross multiply
    61,292.78x = 91,892.44 × 31,691.74
  4. Step 4: Simplify right side
    61,292.78x = 2,912,231,316.45
  5. Step 5: Solve for x
    x = 2,912,231,316.45/61,292.78
  6. Step 6: Final answer
    x = 47,513.45

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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.