Home / 91,082.81-136,646.09-28,753.31

Finding the Fourth Proportional to 91,082.81, 136,646.09 and 28,753.31

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Solution

The fourth proportional to 91,082.81, 136,646.09 and 28,753.31 is: 43,136.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,082.81 : 136,646.09 = 28,753.31 : x
  2. Step 2: Convert to fraction form
    91,082.81/136,646.09 = 28,753.31/x
  3. Step 3: Cross multiply
    91,082.81x = 136,646.09 × 28,753.31
  4. Step 4: Simplify right side
    91,082.81x = 3,929,027,691.73
  5. Step 5: Solve for x
    x = 3,929,027,691.73/91,082.81
  6. Step 6: Final answer
    x = 43,136.87

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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.