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Finding the Fourth Proportional to 57,125.80, 85,688.70 and 15,003.10

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Solution

The fourth proportional to 57,125.80, 85,688.70 and 15,003.10 is: 22,504.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,125.80 : 85,688.70 = 15,003.10 : x
  2. Step 2: Convert to fraction form
    57,125.80/85,688.70 = 15,003.10/x
  3. Step 3: Cross multiply
    57,125.80x = 85,688.70 × 15,003.10
  4. Step 4: Simplify right side
    57,125.80x = 1,285,596,134.97
  5. Step 5: Solve for x
    x = 1,285,596,134.97/57,125.80
  6. Step 6: Final answer
    x = 22,504.65

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Similar ratio
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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.