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Finding the Fourth Proportional to 86,462.69, 129,690.79 and 27,301.91

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Solution

The fourth proportional to 86,462.69, 129,690.79 and 27,301.91 is: 40,951.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,462.69 : 129,690.79 = 27,301.91 : x
  2. Step 2: Convert to fraction form
    86,462.69/129,690.79 = 27,301.91/x
  3. Step 3: Cross multiply
    86,462.69x = 129,690.79 × 27,301.91
  4. Step 4: Simplify right side
    86,462.69x = 3,540,805,559.70
  5. Step 5: Solve for x
    x = 3,540,805,559.70/86,462.69
  6. Step 6: Final answer
    x = 40,951.83

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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.