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Finding the Fourth Proportional to 86,537.42, 129,822.15 and 27,387.98

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Solution

The fourth proportional to 86,537.42, 129,822.15 and 27,387.98 is: 41,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,537.42 : 129,822.15 = 27,387.98 : x
  2. Step 2: Convert to fraction form
    86,537.42/129,822.15 = 27,387.98/x
  3. Step 3: Cross multiply
    86,537.42x = 129,822.15 × 27,387.98
  4. Step 4: Simplify right side
    86,537.42x = 3,555,566,447.76
  5. Step 5: Solve for x
    x = 3,555,566,447.76/86,537.42
  6. Step 6: Final answer
    x = 41,087.04

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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.