Home / 83,785.76-125,639.12-30,440.14

Finding the Fourth Proportional to 83,785.76, 125,639.12 and 30,440.14

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Solution

The fourth proportional to 83,785.76, 125,639.12 and 30,440.14 is: 45,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,785.76 : 125,639.12 = 30,440.14 : x
  2. Step 2: Convert to fraction form
    83,785.76/125,639.12 = 30,440.14/x
  3. Step 3: Cross multiply
    83,785.76x = 125,639.12 × 30,440.14
  4. Step 4: Simplify right side
    83,785.76x = 3,824,472,402.28
  5. Step 5: Solve for x
    x = 3,824,472,402.28/83,785.76
  6. Step 6: Final answer
    x = 45,645.85

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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.