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Finding the Fourth Proportional to 83,499.96, 125,250.19 and 20,320.09

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Solution

The fourth proportional to 83,499.96, 125,250.19 and 20,320.09 is: 30,480.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,499.96 : 125,250.19 = 20,320.09 : x
  2. Step 2: Convert to fraction form
    83,499.96/125,250.19 = 20,320.09/x
  3. Step 3: Cross multiply
    83,499.96x = 125,250.19 × 20,320.09
  4. Step 4: Simplify right side
    83,499.96x = 2,545,094,405.47
  5. Step 5: Solve for x
    x = 2,545,094,405.47/83,499.96
  6. Step 6: Final answer
    x = 30,480.19

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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.