Home / 78,272.13-107,974.17-55,620.28

Finding the Fourth Proportional to 78,272.13, 107,974.17 and 55,620.28

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Solution

The fourth proportional to 78,272.13, 107,974.17 and 55,620.28 is: 76,726.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,272.13 : 107,974.17 = 55,620.28 : x
  2. Step 2: Convert to fraction form
    78,272.13/107,974.17 = 55,620.28/x
  3. Step 3: Cross multiply
    78,272.13x = 107,974.17 × 55,620.28
  4. Step 4: Simplify right side
    78,272.13x = 6,005,553,568.17
  5. Step 5: Solve for x
    x = 6,005,553,568.17/78,272.13
  6. Step 6: Final answer
    x = 76,726.59

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1.5x scale

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.