Home / 83,543.90-125,315.55-20,363.30

Finding the Fourth Proportional to 83,543.90, 125,315.55 and 20,363.30

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Solution

The fourth proportional to 83,543.90, 125,315.55 and 20,363.30 is: 30,544.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,543.90 : 125,315.55 = 20,363.30 : x
  2. Step 2: Convert to fraction form
    83,543.90/125,315.55 = 20,363.30/x
  3. Step 3: Cross multiply
    83,543.90x = 125,315.55 × 20,363.30
  4. Step 4: Simplify right side
    83,543.90x = 2,551,838,139.32
  5. Step 5: Solve for x
    x = 2,551,838,139.32/83,543.90
  6. Step 6: Final answer
    x = 30,544.88

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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.