Home / 77,240.22-115,856.85-21,080.14

Finding the Fourth Proportional to 77,240.22, 115,856.85 and 21,080.14

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Solution

The fourth proportional to 77,240.22, 115,856.85 and 21,080.14 is: 31,619.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,240.22 : 115,856.85 = 21,080.14 : x
  2. Step 2: Convert to fraction form
    77,240.22/115,856.85 = 21,080.14/x
  3. Step 3: Cross multiply
    77,240.22x = 115,856.85 × 21,080.14
  4. Step 4: Simplify right side
    77,240.22x = 2,442,278,617.96
  5. Step 5: Solve for x
    x = 2,442,278,617.96/77,240.22
  6. Step 6: Final answer
    x = 31,619.26

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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.