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Finding the Fourth Proportional to 71,078.88, 98,079.20 and 40,452.56

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Solution

The fourth proportional to 71,078.88, 98,079.20 and 40,452.56 is: 55,819.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,078.88 : 98,079.20 = 40,452.56 : x
  2. Step 2: Convert to fraction form
    71,078.88/98,079.20 = 40,452.56/x
  3. Step 3: Cross multiply
    71,078.88x = 98,079.20 × 40,452.56
  4. Step 4: Simplify right side
    71,078.88x = 3,967,554,722.75
  5. Step 5: Solve for x
    x = 3,967,554,722.75/71,078.88
  6. Step 6: Final answer
    x = 55,819.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.