Home / 83,678.36-115,470.65-49,685.09

Finding the Fourth Proportional to 83,678.36, 115,470.65 and 49,685.09

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Solution

The fourth proportional to 83,678.36, 115,470.65 and 49,685.09 is: 68,562.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,678.36 : 115,470.65 = 49,685.09 : x
  2. Step 2: Convert to fraction form
    83,678.36/115,470.65 = 49,685.09/x
  3. Step 3: Cross multiply
    83,678.36x = 115,470.65 × 49,685.09
  4. Step 4: Simplify right side
    83,678.36x = 5,737,169,389.18
  5. Step 5: Solve for x
    x = 5,737,169,389.18/83,678.36
  6. Step 6: Final answer
    x = 68,562.16

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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.