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Finding the Fourth Proportional to 90,988.80, 125,565.05 and 52,771

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Solution

The fourth proportional to 90,988.80, 125,565.05 and 52,771 is: 72,824.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,988.80 : 125,565.05 = 52,771 : x
  2. Step 2: Convert to fraction form
    90,988.80/125,565.05 = 52,771/x
  3. Step 3: Cross multiply
    90,988.80x = 125,565.05 × 52,771
  4. Step 4: Simplify right side
    90,988.80x = 6,626,192,989.70
  5. Step 5: Solve for x
    x = 6,626,192,989.70/90,988.80
  6. Step 6: Final answer
    x = 72,824.27

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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.