Home / 83,601.16-125,403.69-20,421.82

Finding the Fourth Proportional to 83,601.16, 125,403.69 and 20,421.82

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Solution

The fourth proportional to 83,601.16, 125,403.69 and 20,421.82 is: 30,633.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,601.16 : 125,403.69 = 20,421.82 : x
  2. Step 2: Convert to fraction form
    83,601.16/125,403.69 = 20,421.82/x
  3. Step 3: Cross multiply
    83,601.16x = 125,403.69 × 20,421.82
  4. Step 4: Simplify right side
    83,601.16x = 2,560,971,817.85
  5. Step 5: Solve for x
    x = 2,560,971,817.85/83,601.16
  6. Step 6: Final answer
    x = 30,633.21

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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.