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Finding the Fourth Proportional to 86,136.64, 129,259.68 and 44,583.64

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Solution

The fourth proportional to 86,136.64, 129,259.68 and 44,583.64 is: 66,903.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,136.64 : 129,259.68 = 44,583.64 : x
  2. Step 2: Convert to fraction form
    86,136.64/129,259.68 = 44,583.64/x
  3. Step 3: Cross multiply
    86,136.64x = 129,259.68 × 44,583.64
  4. Step 4: Simplify right side
    86,136.64x = 5,762,867,039.64
  5. Step 5: Solve for x
    x = 5,762,867,039.64/86,136.64
  6. Step 6: Final answer
    x = 66,903.78

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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.