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Finding the Fourth Proportional to 86,473.88, 129,687.60 and 33,154.28

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Solution

The fourth proportional to 86,473.88, 129,687.60 and 33,154.28 is: 49,722.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,473.88 : 129,687.60 = 33,154.28 : x
  2. Step 2: Convert to fraction form
    86,473.88/129,687.60 = 33,154.28/x
  3. Step 3: Cross multiply
    86,473.88x = 129,687.60 × 33,154.28
  4. Step 4: Simplify right side
    86,473.88x = 4,299,699,002.93
  5. Step 5: Solve for x
    x = 4,299,699,002.93/86,473.88
  6. Step 6: Final answer
    x = 49,722.52

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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.