Home / 80,655.42-120,994.11-28,058.07

Finding the Fourth Proportional to 80,655.42, 120,994.11 and 28,058.07

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Solution

The fourth proportional to 80,655.42, 120,994.11 and 28,058.07 is: 42,090.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,655.42 : 120,994.11 = 28,058.07 : x
  2. Step 2: Convert to fraction form
    80,655.42/120,994.11 = 28,058.07/x
  3. Step 3: Cross multiply
    80,655.42x = 120,994.11 × 28,058.07
  4. Step 4: Simplify right side
    80,655.42x = 3,394,861,207.97
  5. Step 5: Solve for x
    x = 3,394,861,207.97/80,655.42
  6. Step 6: Final answer
    x = 42,090.92

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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.