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Finding the Fourth Proportional to 82,874.35, 124,311.53 and 71,599.15

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Solution

The fourth proportional to 82,874.35, 124,311.53 and 71,599.15 is: 107,398.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,874.35 : 124,311.53 = 71,599.15 : x
  2. Step 2: Convert to fraction form
    82,874.35/124,311.53 = 71,599.15/x
  3. Step 3: Cross multiply
    82,874.35x = 124,311.53 × 71,599.15
  4. Step 4: Simplify right side
    82,874.35x = 8,900,599,525.20
  5. Step 5: Solve for x
    x = 8,900,599,525.20/82,874.35
  6. Step 6: Final answer
    x = 107,398.73

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1.5x scale

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.