Home / 86,171.43-129,125.16-57,987.03

Finding the Fourth Proportional to 86,171.43, 129,125.16 and 57,987.03

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Solution

The fourth proportional to 86,171.43, 129,125.16 and 57,987.03 is: 86,891.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,171.43 : 129,125.16 = 57,987.03 : x
  2. Step 2: Convert to fraction form
    86,171.43/129,125.16 = 57,987.03/x
  3. Step 3: Cross multiply
    86,171.43x = 129,125.16 × 57,987.03
  4. Step 4: Simplify right side
    86,171.43x = 7,487,584,526.67
  5. Step 5: Solve for x
    x = 7,487,584,526.67/86,171.43
  6. Step 6: Final answer
    x = 86,891.73

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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.