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Finding the Fourth Proportional to 86,217.59, 129,331.84 and 27,055.59

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Solution

The fourth proportional to 86,217.59, 129,331.84 and 27,055.59 is: 40,585.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,217.59 : 129,331.84 = 27,055.59 : x
  2. Step 2: Convert to fraction form
    86,217.59/129,331.84 = 27,055.59/x
  3. Step 3: Cross multiply
    86,217.59x = 129,331.84 × 27,055.59
  4. Step 4: Simplify right side
    86,217.59x = 3,499,149,338.44
  5. Step 5: Solve for x
    x = 3,499,149,338.44/86,217.59
  6. Step 6: Final answer
    x = 40,585.10

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1.5x scale

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.