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Finding the Fourth Proportional to 55,139.70, 82,720.35 and 23,549.70

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Solution

The fourth proportional to 55,139.70, 82,720.35 and 23,549.70 is: 35,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,139.70 : 82,720.35 = 23,549.70 : x
  2. Step 2: Convert to fraction form
    55,139.70/82,720.35 = 23,549.70/x
  3. Step 3: Cross multiply
    55,139.70x = 82,720.35 × 23,549.70
  4. Step 4: Simplify right side
    55,139.70x = 1,948,039,426.40
  5. Step 5: Solve for x
    x = 1,948,039,426.40/55,139.70
  6. Step 6: Final answer
    x = 35,329.16

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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.