Home / 83,781.25-115,618.13-47,983.12

Finding the Fourth Proportional to 83,781.25, 115,618.13 and 47,983.12

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Solution

The fourth proportional to 83,781.25, 115,618.13 and 47,983.12 is: 66,216.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,781.25 : 115,618.13 = 47,983.12 : x
  2. Step 2: Convert to fraction form
    83,781.25/115,618.13 = 47,983.12/x
  3. Step 3: Cross multiply
    83,781.25x = 115,618.13 × 47,983.12
  4. Step 4: Simplify right side
    83,781.25x = 5,547,718,605.97
  5. Step 5: Solve for x
    x = 5,547,718,605.97/83,781.25
  6. Step 6: Final answer
    x = 66,216.71

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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.