Home / 83,010.30-124,515.45-20,680.80

Finding the Fourth Proportional to 83,010.30, 124,515.45 and 20,680.80

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Solution

The fourth proportional to 83,010.30, 124,515.45 and 20,680.80 is: 31,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,010.30 : 124,515.45 = 20,680.80 : x
  2. Step 2: Convert to fraction form
    83,010.30/124,515.45 = 20,680.80/x
  3. Step 3: Cross multiply
    83,010.30x = 124,515.45 × 20,680.80
  4. Step 4: Simplify right side
    83,010.30x = 2,575,079,118.36
  5. Step 5: Solve for x
    x = 2,575,079,118.36/83,010.30
  6. Step 6: Final answer
    x = 31,021.20

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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.