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Finding the Fourth Proportional to 61,304.80, 91,957.20 and 31,731.70

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Solution

The fourth proportional to 61,304.80, 91,957.20 and 31,731.70 is: 47,597.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,304.80 : 91,957.20 = 31,731.70 : x
  2. Step 2: Convert to fraction form
    61,304.80/91,957.20 = 31,731.70/x
  3. Step 3: Cross multiply
    61,304.80x = 91,957.20 × 31,731.70
  4. Step 4: Simplify right side
    61,304.80x = 2,917,958,283.24
  5. Step 5: Solve for x
    x = 2,917,958,283.24/61,304.80
  6. Step 6: Final answer
    x = 47,597.55

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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.