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Finding the Fourth Proportional to 57,414.70, 78,737.92 and 55,019.92

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Solution

The fourth proportional to 57,414.70, 78,737.92 and 55,019.92 is: 75,453.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,414.70 : 78,737.92 = 55,019.92 : x
  2. Step 2: Convert to fraction form
    57,414.70/78,737.92 = 55,019.92/x
  3. Step 3: Cross multiply
    57,414.70x = 78,737.92 × 55,019.92
  4. Step 4: Simplify right side
    57,414.70x = 4,332,154,059.37
  5. Step 5: Solve for x
    x = 4,332,154,059.37/57,414.70
  6. Step 6: Final answer
    x = 75,453.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.