Home / 77,071.28-115,616.19-27,141.06

Finding the Fourth Proportional to 77,071.28, 115,616.19 and 27,141.06

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Solution

The fourth proportional to 77,071.28, 115,616.19 and 27,141.06 is: 40,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,071.28 : 115,616.19 = 27,141.06 : x
  2. Step 2: Convert to fraction form
    77,071.28/115,616.19 = 27,141.06/x
  3. Step 3: Cross multiply
    77,071.28x = 115,616.19 × 27,141.06
  4. Step 4: Simplify right side
    77,071.28x = 3,137,945,949.76
  5. Step 5: Solve for x
    x = 3,137,945,949.76/77,071.28
  6. Step 6: Final answer
    x = 40,714.86

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1.5x scale

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.