Home / 78,721.65-108,631.89-44,725.68

Finding the Fourth Proportional to 78,721.65, 108,631.89 and 44,725.68

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Solution

The fourth proportional to 78,721.65, 108,631.89 and 44,725.68 is: 61,719.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,721.65 : 108,631.89 = 44,725.68 : x
  2. Step 2: Convert to fraction form
    78,721.65/108,631.89 = 44,725.68/x
  3. Step 3: Cross multiply
    78,721.65x = 108,631.89 × 44,725.68
  4. Step 4: Simplify right side
    78,721.65x = 4,858,635,149.94
  5. Step 5: Solve for x
    x = 4,858,635,149.94/78,721.65
  6. Step 6: Final answer
    x = 61,719.17

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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.