Home / 83,547.20-125,320.80-21,217.70

Finding the Fourth Proportional to 83,547.20, 125,320.80 and 21,217.70

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Solution

The fourth proportional to 83,547.20, 125,320.80 and 21,217.70 is: 31,826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,547.20 : 125,320.80 = 21,217.70 : x
  2. Step 2: Convert to fraction form
    83,547.20/125,320.80 = 21,217.70/x
  3. Step 3: Cross multiply
    83,547.20x = 125,320.80 × 21,217.70
  4. Step 4: Simplify right side
    83,547.20x = 2,659,019,138.16
  5. Step 5: Solve for x
    x = 2,659,019,138.16/83,547.20
  6. Step 6: Final answer
    x = 31,826.55

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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.