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Finding the Fourth Proportional to 77,951.08, 107,569.87 and 49,286.17

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Solution

The fourth proportional to 77,951.08, 107,569.87 and 49,286.17 is: 68,013.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,951.08 : 107,569.87 = 49,286.17 : x
  2. Step 2: Convert to fraction form
    77,951.08/107,569.87 = 49,286.17/x
  3. Step 3: Cross multiply
    77,951.08x = 107,569.87 × 49,286.17
  4. Step 4: Simplify right side
    77,951.08x = 5,301,707,188.18
  5. Step 5: Solve for x
    x = 5,301,707,188.18/77,951.08
  6. Step 6: Final answer
    x = 68,013.26

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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.