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Finding the Fourth Proportional to 75,483.28, 113,224.76 and 20,079.28

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Solution

The fourth proportional to 75,483.28, 113,224.76 and 20,079.28 is: 30,118.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,483.28 : 113,224.76 = 20,079.28 : x
  2. Step 2: Convert to fraction form
    75,483.28/113,224.76 = 20,079.28/x
  3. Step 3: Cross multiply
    75,483.28x = 113,224.76 × 20,079.28
  4. Step 4: Simplify right side
    75,483.28x = 2,273,471,658.97
  5. Step 5: Solve for x
    x = 2,273,471,658.97/75,483.28
  6. Step 6: Final answer
    x = 30,118.88

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1.5x scale

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.