Home / 83,521.07-125,288.90-21,191.57

Finding the Fourth Proportional to 83,521.07, 125,288.90 and 21,191.57

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Solution

The fourth proportional to 83,521.07, 125,288.90 and 21,191.57 is: 31,789.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,521.07 : 125,288.90 = 21,191.57 : x
  2. Step 2: Convert to fraction form
    83,521.07/125,288.90 = 21,191.57/x
  3. Step 3: Cross multiply
    83,521.07x = 125,288.90 × 21,191.57
  4. Step 4: Simplify right side
    83,521.07x = 2,655,067,762.17
  5. Step 5: Solve for x
    x = 2,655,067,762.17/83,521.07
  6. Step 6: Final answer
    x = 31,789.20

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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.