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Finding the Fourth Proportional to 86,159.55, 129,245.49 and 22,979.34

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Solution

The fourth proportional to 86,159.55, 129,245.49 and 22,979.34 is: 34,470.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,159.55 : 129,245.49 = 22,979.34 : x
  2. Step 2: Convert to fraction form
    86,159.55/129,245.49 = 22,979.34/x
  3. Step 3: Cross multiply
    86,159.55x = 129,245.49 × 22,979.34
  4. Step 4: Simplify right side
    86,159.55x = 2,969,976,058.18
  5. Step 5: Solve for x
    x = 2,969,976,058.18/86,159.55
  6. Step 6: Final answer
    x = 34,470.65

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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.