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Finding the Fourth Proportional to 61,302.80, 91,954.20 and 31,729.70

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Solution

The fourth proportional to 61,302.80, 91,954.20 and 31,729.70 is: 47,594.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,302.80 : 91,954.20 = 31,729.70 : x
  2. Step 2: Convert to fraction form
    61,302.80/91,954.20 = 31,729.70/x
  3. Step 3: Cross multiply
    61,302.80x = 91,954.20 × 31,729.70
  4. Step 4: Simplify right side
    61,302.80x = 2,917,679,179.74
  5. Step 5: Solve for x
    x = 2,917,679,179.74/61,302.80
  6. Step 6: Final answer
    x = 47,594.55

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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.