Home / 87,428.96-120,671.04-55,591.64

Finding the Fourth Proportional to 87,428.96, 120,671.04 and 55,591.64

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Solution

The fourth proportional to 87,428.96, 120,671.04 and 55,591.64 is: 76,728.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,428.96 : 120,671.04 = 55,591.64 : x
  2. Step 2: Convert to fraction form
    87,428.96/120,671.04 = 55,591.64/x
  3. Step 3: Cross multiply
    87,428.96x = 120,671.04 × 55,591.64
  4. Step 4: Simplify right side
    87,428.96x = 6,708,301,014.11
  5. Step 5: Solve for x
    x = 6,708,301,014.11/87,428.96
  6. Step 6: Final answer
    x = 76,728.59

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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.