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Finding the Fourth Proportional to 57,557.52, 86,375.40 and 20,621.52

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Solution

The fourth proportional to 57,557.52, 86,375.40 and 20,621.52 is: 30,946.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,557.52 : 86,375.40 = 20,621.52 : x
  2. Step 2: Convert to fraction form
    57,557.52/86,375.40 = 20,621.52/x
  3. Step 3: Cross multiply
    57,557.52x = 86,375.40 × 20,621.52
  4. Step 4: Simplify right side
    57,557.52x = 1,781,192,038.61
  5. Step 5: Solve for x
    x = 1,781,192,038.61/57,557.52
  6. Step 6: Final answer
    x = 30,946.30

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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.