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Finding the Fourth Proportional to 88,264.80, 132,397.20 and 72,712.80

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Solution

The fourth proportional to 88,264.80, 132,397.20 and 72,712.80 is: 109,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,264.80 : 132,397.20 = 72,712.80 : x
  2. Step 2: Convert to fraction form
    88,264.80/132,397.20 = 72,712.80/x
  3. Step 3: Cross multiply
    88,264.80x = 132,397.20 × 72,712.80
  4. Step 4: Simplify right side
    88,264.80x = 9,626,971,124.16
  5. Step 5: Solve for x
    x = 9,626,971,124.16/88,264.80
  6. Step 6: Final answer
    x = 109,069.20

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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.