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Finding the Fourth Proportional to 86,568.55, 129,871.05 and 27,410.20

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Solution

The fourth proportional to 86,568.55, 129,871.05 and 27,410.20 is: 41,121.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,568.55 : 129,871.05 = 27,410.20 : x
  2. Step 2: Convert to fraction form
    86,568.55/129,871.05 = 27,410.20/x
  3. Step 3: Cross multiply
    86,568.55x = 129,871.05 × 27,410.20
  4. Step 4: Simplify right side
    86,568.55x = 3,559,791,454.71
  5. Step 5: Solve for x
    x = 3,559,791,454.71/86,568.55
  6. Step 6: Final answer
    x = 41,121.07

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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.