Home / 77,086.28-115,613.52-29,685.10

Finding the Fourth Proportional to 77,086.28, 115,613.52 and 29,685.10

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Solution

The fourth proportional to 77,086.28, 115,613.52 and 29,685.10 is: 44,521.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,086.28 : 115,613.52 = 29,685.10 : x
  2. Step 2: Convert to fraction form
    77,086.28/115,613.52 = 29,685.10/x
  3. Step 3: Cross multiply
    77,086.28x = 115,613.52 × 29,685.10
  4. Step 4: Simplify right side
    77,086.28x = 3,431,998,902.55
  5. Step 5: Solve for x
    x = 3,431,998,902.55/77,086.28
  6. Step 6: Final answer
    x = 44,521.53

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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.