Home / 87,936.96-121,335.12-52,111.20

Finding the Fourth Proportional to 87,936.96, 121,335.12 and 52,111.20

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Solution

The fourth proportional to 87,936.96, 121,335.12 and 52,111.20 is: 71,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,936.96 : 121,335.12 = 52,111.20 : x
  2. Step 2: Convert to fraction form
    87,936.96/121,335.12 = 52,111.20/x
  3. Step 3: Cross multiply
    87,936.96x = 121,335.12 × 52,111.20
  4. Step 4: Simplify right side
    87,936.96x = 6,322,918,705.34
  5. Step 5: Solve for x
    x = 6,322,918,705.34/87,936.96
  6. Step 6: Final answer
    x = 71,902.86

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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.