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Finding the Fourth Proportional to 83,063.60, 124,638.60 and 36,321.20

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Solution

The fourth proportional to 83,063.60, 124,638.60 and 36,321.20 is: 54,500.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,063.60 : 124,638.60 = 36,321.20 : x
  2. Step 2: Convert to fraction form
    83,063.60/124,638.60 = 36,321.20/x
  3. Step 3: Cross multiply
    83,063.60x = 124,638.60 × 36,321.20
  4. Step 4: Simplify right side
    83,063.60x = 4,527,023,518.32
  5. Step 5: Solve for x
    x = 4,527,023,518.32/83,063.60
  6. Step 6: Final answer
    x = 54,500.69

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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.