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Finding the Fourth Proportional to 86,565.60, 129,751.20 and 44,429.40

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Solution

The fourth proportional to 86,565.60, 129,751.20 and 44,429.40 is: 66,594.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,565.60 : 129,751.20 = 44,429.40 : x
  2. Step 2: Convert to fraction form
    86,565.60/129,751.20 = 44,429.40/x
  3. Step 3: Cross multiply
    86,565.60x = 129,751.20 × 44,429.40
  4. Step 4: Simplify right side
    86,565.60x = 5,764,767,965.28
  5. Step 5: Solve for x
    x = 5,764,767,965.28/86,565.60
  6. Step 6: Final answer
    x = 66,594.21

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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.