Home / 82,381.08-123,571.56-71,254.68

Finding the Fourth Proportional to 82,381.08, 123,571.56 and 71,254.68

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Solution

The fourth proportional to 82,381.08, 123,571.56 and 71,254.68 is: 106,881.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,381.08 : 123,571.56 = 71,254.68 : x
  2. Step 2: Convert to fraction form
    82,381.08/123,571.56 = 71,254.68/x
  3. Step 3: Cross multiply
    82,381.08x = 123,571.56 × 71,254.68
  4. Step 4: Simplify right side
    82,381.08x = 8,805,051,964.90
  5. Step 5: Solve for x
    x = 8,805,051,964.90/82,381.08
  6. Step 6: Final answer
    x = 106,881.97

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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.