Home / 80,805.60-121,191.12-25,371.36

Finding the Fourth Proportional to 80,805.60, 121,191.12 and 25,371.36

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Solution

The fourth proportional to 80,805.60, 121,191.12 and 25,371.36 is: 38,051.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,805.60 : 121,191.12 = 25,371.36 : x
  2. Step 2: Convert to fraction form
    80,805.60/121,191.12 = 25,371.36/x
  3. Step 3: Cross multiply
    80,805.60x = 121,191.12 × 25,371.36
  4. Step 4: Simplify right side
    80,805.60x = 3,074,783,534.32
  5. Step 5: Solve for x
    x = 3,074,783,534.32/80,805.60
  6. Step 6: Final answer
    x = 38,051.61

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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.