Home / 83,990.11-115,854.24-49,975.60

Finding the Fourth Proportional to 83,990.11, 115,854.24 and 49,975.60

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Solution

The fourth proportional to 83,990.11, 115,854.24 and 49,975.60 is: 68,935.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,990.11 : 115,854.24 = 49,975.60 : x
  2. Step 2: Convert to fraction form
    83,990.11/115,854.24 = 49,975.60/x
  3. Step 3: Cross multiply
    83,990.11x = 115,854.24 × 49,975.60
  4. Step 4: Simplify right side
    83,990.11x = 5,789,885,156.54
  5. Step 5: Solve for x
    x = 5,789,885,156.54/83,990.11
  6. Step 6: Final answer
    x = 68,935.32

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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.