Home / 82,117.80-123,176.70-29,520.45

Finding the Fourth Proportional to 82,117.80, 123,176.70 and 29,520.45

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Solution

The fourth proportional to 82,117.80, 123,176.70 and 29,520.45 is: 44,280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,117.80 : 123,176.70 = 29,520.45 : x
  2. Step 2: Convert to fraction form
    82,117.80/123,176.70 = 29,520.45/x
  3. Step 3: Cross multiply
    82,117.80x = 123,176.70 × 29,520.45
  4. Step 4: Simplify right side
    82,117.80x = 3,636,231,613.52
  5. Step 5: Solve for x
    x = 3,636,231,613.52/82,117.80
  6. Step 6: Final answer
    x = 44,280.68

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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.