Home / 83,872.13-115,743.81-45,631.65

Finding the Fourth Proportional to 83,872.13, 115,743.81 and 45,631.65

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Solution

The fourth proportional to 83,872.13, 115,743.81 and 45,631.65 is: 62,971.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,872.13 : 115,743.81 = 45,631.65 : x
  2. Step 2: Convert to fraction form
    83,872.13/115,743.81 = 45,631.65/x
  3. Step 3: Cross multiply
    83,872.13x = 115,743.81 × 45,631.65
  4. Step 4: Simplify right side
    83,872.13x = 5,281,581,504.41
  5. Step 5: Solve for x
    x = 5,281,581,504.41/83,872.13
  6. Step 6: Final answer
    x = 62,971.83

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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.