Home / 83,439.47-115,145.78-45,198.13

Finding the Fourth Proportional to 83,439.47, 115,145.78 and 45,198.13

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Solution

The fourth proportional to 83,439.47, 115,145.78 and 45,198.13 is: 62,373.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,439.47 : 115,145.78 = 45,198.13 : x
  2. Step 2: Convert to fraction form
    83,439.47/115,145.78 = 45,198.13/x
  3. Step 3: Cross multiply
    83,439.47x = 115,145.78 × 45,198.13
  4. Step 4: Simplify right side
    83,439.47x = 5,204,373,933.39
  5. Step 5: Solve for x
    x = 5,204,373,933.39/83,439.47
  6. Step 6: Final answer
    x = 62,373.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.