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Finding the Fourth Proportional to 61,711.31, 85,159.88 and 36,560.81

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Solution

The fourth proportional to 61,711.31, 85,159.88 and 36,560.81 is: 50,452.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,711.31 : 85,159.88 = 36,560.81 : x
  2. Step 2: Convert to fraction form
    61,711.31/85,159.88 = 36,560.81/x
  3. Step 3: Cross multiply
    61,711.31x = 85,159.88 × 36,560.81
  4. Step 4: Simplify right side
    61,711.31x = 3,113,513,583.70
  5. Step 5: Solve for x
    x = 3,113,513,583.70/61,711.31
  6. Step 6: Final answer
    x = 50,452.89

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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.