Home / 81,154.26-111,990.78-45,344.58

Finding the Fourth Proportional to 81,154.26, 111,990.78 and 45,344.58

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Solution

The fourth proportional to 81,154.26, 111,990.78 and 45,344.58 is: 62,574.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,154.26 : 111,990.78 = 45,344.58 : x
  2. Step 2: Convert to fraction form
    81,154.26/111,990.78 = 45,344.58/x
  3. Step 3: Cross multiply
    81,154.26x = 111,990.78 × 45,344.58
  4. Step 4: Simplify right side
    81,154.26x = 5,078,174,882.97
  5. Step 5: Solve for x
    x = 5,078,174,882.97/81,154.26
  6. Step 6: Final answer
    x = 62,574.35

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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.