Home / 82,507.13-123,740.87-38,091.21

Finding the Fourth Proportional to 82,507.13, 123,740.87 and 38,091.21

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Solution

The fourth proportional to 82,507.13, 123,740.87 and 38,091.21 is: 57,127.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,507.13 : 123,740.87 = 38,091.21 : x
  2. Step 2: Convert to fraction form
    82,507.13/123,740.87 = 38,091.21/x
  3. Step 3: Cross multiply
    82,507.13x = 123,740.87 × 38,091.21
  4. Step 4: Simplify right side
    82,507.13x = 4,713,438,655.59
  5. Step 5: Solve for x
    x = 4,713,438,655.59/82,507.13
  6. Step 6: Final answer
    x = 57,127.66

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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.