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Finding the Fourth Proportional to 86,390.96, 129,604.02 and 36,471.08

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Solution

The fourth proportional to 86,390.96, 129,604.02 and 36,471.08 is: 54,714.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,390.96 : 129,604.02 = 36,471.08 : x
  2. Step 2: Convert to fraction form
    86,390.96/129,604.02 = 36,471.08/x
  3. Step 3: Cross multiply
    86,390.96x = 129,604.02 × 36,471.08
  4. Step 4: Simplify right side
    86,390.96x = 4,726,798,581.74
  5. Step 5: Solve for x
    x = 4,726,798,581.74/86,390.96
  6. Step 6: Final answer
    x = 54,714.04

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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.