Home / 80,958.57-121,438.62-31,026.78

Finding the Fourth Proportional to 80,958.57, 121,438.62 and 31,026.78

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Solution

The fourth proportional to 80,958.57, 121,438.62 and 31,026.78 is: 46,540.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,958.57 : 121,438.62 = 31,026.78 : x
  2. Step 2: Convert to fraction form
    80,958.57/121,438.62 = 31,026.78/x
  3. Step 3: Cross multiply
    80,958.57x = 121,438.62 × 31,026.78
  4. Step 4: Simplify right side
    80,958.57x = 3,767,849,346.24
  5. Step 5: Solve for x
    x = 3,767,849,346.24/80,958.57
  6. Step 6: Final answer
    x = 46,540.46

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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.