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Finding the Fourth Proportional to 82,507.62, 123,741.62 and 38,091.70

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Solution

The fourth proportional to 82,507.62, 123,741.62 and 38,091.70 is: 57,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,507.62 : 123,741.62 = 38,091.70 : x
  2. Step 2: Convert to fraction form
    82,507.62/123,741.62 = 38,091.70/x
  3. Step 3: Cross multiply
    82,507.62x = 123,741.62 × 38,091.70
  4. Step 4: Simplify right side
    82,507.62x = 4,713,528,773.62
  5. Step 5: Solve for x
    x = 4,713,528,773.62/82,507.62
  6. Step 6: Final answer
    x = 57,128.40

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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.