Home / 82,518.66-123,758.08-38,102.72

Finding the Fourth Proportional to 82,518.66, 123,758.08 and 38,102.72

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Solution

The fourth proportional to 82,518.66, 123,758.08 and 38,102.72 is: 57,144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,518.66 : 123,758.08 = 38,102.72 : x
  2. Step 2: Convert to fraction form
    82,518.66/123,758.08 = 38,102.72/x
  3. Step 3: Cross multiply
    82,518.66x = 123,758.08 × 38,102.72
  4. Step 4: Simplify right side
    82,518.66x = 4,715,518,755.93
  5. Step 5: Solve for x
    x = 4,715,518,755.93/82,518.66
  6. Step 6: Final answer
    x = 57,144.88

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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.