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Finding the Fourth Proportional to 57,252.80, 85,879.20 and 39,538.10

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Solution

The fourth proportional to 57,252.80, 85,879.20 and 39,538.10 is: 59,307.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,252.80 : 85,879.20 = 39,538.10 : x
  2. Step 2: Convert to fraction form
    57,252.80/85,879.20 = 39,538.10/x
  3. Step 3: Cross multiply
    57,252.80x = 85,879.20 × 39,538.10
  4. Step 4: Simplify right side
    57,252.80x = 3,395,500,397.52
  5. Step 5: Solve for x
    x = 3,395,500,397.52/57,252.80
  6. Step 6: Final answer
    x = 59,307.15

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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.