Home / 68,204.32-102,320.40-28,761.36

Finding the Fourth Proportional to 68,204.32, 102,320.40 and 28,761.36

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Solution

The fourth proportional to 68,204.32, 102,320.40 and 28,761.36 is: 43,147.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,204.32 : 102,320.40 = 28,761.36 : x
  2. Step 2: Convert to fraction form
    68,204.32/102,320.40 = 28,761.36/x
  3. Step 3: Cross multiply
    68,204.32x = 102,320.40 × 28,761.36
  4. Step 4: Simplify right side
    68,204.32x = 2,942,873,859.74
  5. Step 5: Solve for x
    x = 2,942,873,859.74/68,204.32
  6. Step 6: Final answer
    x = 43,147.91

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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.