Home / 83,122.20-124,683.30-20,792.70

Finding the Fourth Proportional to 83,122.20, 124,683.30 and 20,792.70

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Solution

The fourth proportional to 83,122.20, 124,683.30 and 20,792.70 is: 31,189.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,122.20 : 124,683.30 = 20,792.70 : x
  2. Step 2: Convert to fraction form
    83,122.20/124,683.30 = 20,792.70/x
  3. Step 3: Cross multiply
    83,122.20x = 124,683.30 × 20,792.70
  4. Step 4: Simplify right side
    83,122.20x = 2,592,502,451.91
  5. Step 5: Solve for x
    x = 2,592,502,451.91/83,122.20
  6. Step 6: Final answer
    x = 31,189.05

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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.