Home / 83,016.30-124,524.72-20,686.80

Finding the Fourth Proportional to 83,016.30, 124,524.72 and 20,686.80

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Solution

The fourth proportional to 83,016.30, 124,524.72 and 20,686.80 is: 31,030.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,016.30 : 124,524.72 = 20,686.80 : x
  2. Step 2: Convert to fraction form
    83,016.30/124,524.72 = 20,686.80/x
  3. Step 3: Cross multiply
    83,016.30x = 124,524.72 × 20,686.80
  4. Step 4: Simplify right side
    83,016.30x = 2,576,017,977.70
  5. Step 5: Solve for x
    x = 2,576,017,977.70/83,016.30
  6. Step 6: Final answer
    x = 31,030.27

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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.