Home / 83,021.40-124,458.12-30,418.56

Finding the Fourth Proportional to 83,021.40, 124,458.12 and 30,418.56

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Solution

The fourth proportional to 83,021.40, 124,458.12 and 30,418.56 is: 45,600.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,021.40 : 124,458.12 = 30,418.56 : x
  2. Step 2: Convert to fraction form
    83,021.40/124,458.12 = 30,418.56/x
  3. Step 3: Cross multiply
    83,021.40x = 124,458.12 × 30,418.56
  4. Step 4: Simplify right side
    83,021.40x = 3,785,836,790.71
  5. Step 5: Solve for x
    x = 3,785,836,790.71/83,021.40
  6. Step 6: Final answer
    x = 45,600.73

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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.