Home / 83,768.25-115,590.47-49,778.17

Finding the Fourth Proportional to 83,768.25, 115,590.47 and 49,778.17

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Solution

The fourth proportional to 83,768.25, 115,590.47 and 49,778.17 is: 68,688.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,768.25 : 115,590.47 = 49,778.17 : x
  2. Step 2: Convert to fraction form
    83,768.25/115,590.47 = 49,778.17/x
  3. Step 3: Cross multiply
    83,768.25x = 115,590.47 × 49,778.17
  4. Step 4: Simplify right side
    83,768.25x = 5,753,881,993.27
  5. Step 5: Solve for x
    x = 5,753,881,993.27/83,768.25
  6. Step 6: Final answer
    x = 68,688.10

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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.