Home / 82,979.04-124,398-38,631.48

Finding the Fourth Proportional to 82,979.04, 124,398 and 38,631.48

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Solution

The fourth proportional to 82,979.04, 124,398 and 38,631.48 is: 57,914.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,979.04 : 124,398 = 38,631.48 : x
  2. Step 2: Convert to fraction form
    82,979.04/124,398 = 38,631.48/x
  3. Step 3: Cross multiply
    82,979.04x = 124,398 × 38,631.48
  4. Step 4: Simplify right side
    82,979.04x = 4,805,678,849.04
  5. Step 5: Solve for x
    x = 4,805,678,849.04/82,979.04
  6. Step 6: Final answer
    x = 57,914.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.