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Finding the Fourth Proportional to 57,531.75, 79,352.92 and 38,401.88

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Solution

The fourth proportional to 57,531.75, 79,352.92 and 38,401.88 is: 52,967.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,531.75 : 79,352.92 = 38,401.88 : x
  2. Step 2: Convert to fraction form
    57,531.75/79,352.92 = 38,401.88/x
  3. Step 3: Cross multiply
    57,531.75x = 79,352.92 × 38,401.88
  4. Step 4: Simplify right side
    57,531.75x = 3,047,300,921.10
  5. Step 5: Solve for x
    x = 3,047,300,921.10/57,531.75
  6. Step 6: Final answer
    x = 52,967.29

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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.