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Finding the Fourth Proportional to 86,489.60, 129,724.80 and 24,166.40

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Solution

The fourth proportional to 86,489.60, 129,724.80 and 24,166.40 is: 36,246.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,489.60 : 129,724.80 = 24,166.40 : x
  2. Step 2: Convert to fraction form
    86,489.60/129,724.80 = 24,166.40/x
  3. Step 3: Cross multiply
    86,489.60x = 129,724.80 × 24,166.40
  4. Step 4: Simplify right side
    86,489.60x = 3,134,981,406.72
  5. Step 5: Solve for x
    x = 3,134,981,406.72/86,489.60
  6. Step 6: Final answer
    x = 36,246.92

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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.