Home / 80,839.92-121,240.68-30,901.68

Finding the Fourth Proportional to 80,839.92, 121,240.68 and 30,901.68

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Solution

The fourth proportional to 80,839.92, 121,240.68 and 30,901.68 is: 46,345.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,839.92 : 121,240.68 = 30,901.68 : x
  2. Step 2: Convert to fraction form
    80,839.92/121,240.68 = 30,901.68/x
  3. Step 3: Cross multiply
    80,839.92x = 121,240.68 × 30,901.68
  4. Step 4: Simplify right side
    80,839.92x = 3,746,540,696.34
  5. Step 5: Solve for x
    x = 3,746,540,696.34/80,839.92
  6. Step 6: Final answer
    x = 46,345.18

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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.