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Finding the Fourth Proportional to 57,479.60, 85,711.78 and 50,488.22

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Solution

The fourth proportional to 57,479.60, 85,711.78 and 50,488.22 is: 75,286.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,479.60 : 85,711.78 = 50,488.22 : x
  2. Step 2: Convert to fraction form
    57,479.60/85,711.78 = 50,488.22/x
  3. Step 3: Cross multiply
    57,479.60x = 85,711.78 × 50,488.22
  4. Step 4: Simplify right side
    57,479.60x = 4,327,435,205.23
  5. Step 5: Solve for x
    x = 4,327,435,205.23/57,479.60
  6. Step 6: Final answer
    x = 75,286.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.