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Finding the Fourth Proportional to 86,589.77, 129,769.83 and 44,468.15

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Solution

The fourth proportional to 86,589.77, 129,769.83 and 44,468.15 is: 66,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,589.77 : 129,769.83 = 44,468.15 : x
  2. Step 2: Convert to fraction form
    86,589.77/129,769.83 = 44,468.15/x
  3. Step 3: Cross multiply
    86,589.77x = 129,769.83 × 44,468.15
  4. Step 4: Simplify right side
    86,589.77x = 5,770,624,265.91
  5. Step 5: Solve for x
    x = 5,770,624,265.91/86,589.77
  6. Step 6: Final answer
    x = 66,643.26

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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.