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Finding the Fourth Proportional to 55,650.40, 83,488.08 and 20,591.20

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Solution

The fourth proportional to 55,650.40, 83,488.08 and 20,591.20 is: 30,891.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,650.40 : 83,488.08 = 20,591.20 : x
  2. Step 2: Convert to fraction form
    55,650.40/83,488.08 = 20,591.20/x
  3. Step 3: Cross multiply
    55,650.40x = 83,488.08 × 20,591.20
  4. Step 4: Simplify right side
    55,650.40x = 1,719,119,752.90
  5. Step 5: Solve for x
    x = 1,719,119,752.90/55,650.40
  6. Step 6: Final answer
    x = 30,891.42

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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.