Home / 79,123.44-109,218-48,931.92

Finding the Fourth Proportional to 79,123.44, 109,218 and 48,931.92

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Solution

The fourth proportional to 79,123.44, 109,218 and 48,931.92 is: 67,543.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,123.44 : 109,218 = 48,931.92 : x
  2. Step 2: Convert to fraction form
    79,123.44/109,218 = 48,931.92/x
  3. Step 3: Cross multiply
    79,123.44x = 109,218 × 48,931.92
  4. Step 4: Simplify right side
    79,123.44x = 5,344,246,438.56
  5. Step 5: Solve for x
    x = 5,344,246,438.56/79,123.44
  6. Step 6: Final answer
    x = 67,543.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.