Home / 86,167.31-129,251.01-39,387.38

Finding the Fourth Proportional to 86,167.31, 129,251.01 and 39,387.38

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Solution

The fourth proportional to 86,167.31, 129,251.01 and 39,387.38 is: 59,081.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,167.31 : 129,251.01 = 39,387.38 : x
  2. Step 2: Convert to fraction form
    86,167.31/129,251.01 = 39,387.38/x
  3. Step 3: Cross multiply
    86,167.31x = 129,251.01 × 39,387.38
  4. Step 4: Simplify right side
    86,167.31x = 5,090,857,803.06
  5. Step 5: Solve for x
    x = 5,090,857,803.06/86,167.31
  6. Step 6: Final answer
    x = 59,081.08

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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.