Home / 82,538.40-123,793.20-29,920.80

Finding the Fourth Proportional to 82,538.40, 123,793.20 and 29,920.80

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Solution

The fourth proportional to 82,538.40, 123,793.20 and 29,920.80 is: 44,875.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,538.40 : 123,793.20 = 29,920.80 : x
  2. Step 2: Convert to fraction form
    82,538.40/123,793.20 = 29,920.80/x
  3. Step 3: Cross multiply
    82,538.40x = 123,793.20 × 29,920.80
  4. Step 4: Simplify right side
    82,538.40x = 3,703,991,578.56
  5. Step 5: Solve for x
    x = 3,703,991,578.56/82,538.40
  6. Step 6: Final answer
    x = 44,875.98

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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.