Home / 82,445.13-123,687.09-65,641.68

Finding the Fourth Proportional to 82,445.13, 123,687.09 and 65,641.68

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Solution

The fourth proportional to 82,445.13, 123,687.09 and 65,641.68 is: 98,477.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,445.13 : 123,687.09 = 65,641.68 : x
  2. Step 2: Convert to fraction form
    82,445.13/123,687.09 = 65,641.68/x
  3. Step 3: Cross multiply
    82,445.13x = 123,687.09 × 65,641.68
  4. Step 4: Simplify right side
    82,445.13x = 8,119,028,381.91
  5. Step 5: Solve for x
    x = 8,119,028,381.91/82,445.13
  6. Step 6: Final answer
    x = 98,477.96

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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.