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Finding the Fourth Proportional to 83,651.70, 115,388.62 and 49,637.77

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Solution

The fourth proportional to 83,651.70, 115,388.62 and 49,637.77 is: 68,470.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,651.70 : 115,388.62 = 49,637.77 : x
  2. Step 2: Convert to fraction form
    83,651.70/115,388.62 = 49,637.77/x
  3. Step 3: Cross multiply
    83,651.70x = 115,388.62 × 49,637.77
  4. Step 4: Simplify right side
    83,651.70x = 5,727,633,780.18
  5. Step 5: Solve for x
    x = 5,727,633,780.18/83,651.70
  6. Step 6: Final answer
    x = 68,470.02

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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.