Home / 83,205.28-124,807.11-20,875.78

Finding the Fourth Proportional to 83,205.28, 124,807.11 and 20,875.78

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Solution

The fourth proportional to 83,205.28, 124,807.11 and 20,875.78 is: 31,313.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,205.28 : 124,807.11 = 20,875.78 : x
  2. Step 2: Convert to fraction form
    83,205.28/124,807.11 = 20,875.78/x
  3. Step 3: Cross multiply
    83,205.28x = 124,807.11 × 20,875.78
  4. Step 4: Simplify right side
    83,205.28x = 2,605,445,770.80
  5. Step 5: Solve for x
    x = 2,605,445,770.80/83,205.28
  6. Step 6: Final answer
    x = 31,313.47

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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.