Home / 80,811.52-121,236.34-25,407.52

Finding the Fourth Proportional to 80,811.52, 121,236.34 and 25,407.52

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Solution

The fourth proportional to 80,811.52, 121,236.34 and 25,407.52 is: 38,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,811.52 : 121,236.34 = 25,407.52 : x
  2. Step 2: Convert to fraction form
    80,811.52/121,236.34 = 25,407.52/x
  3. Step 3: Cross multiply
    80,811.52x = 121,236.34 × 25,407.52
  4. Step 4: Simplify right side
    80,811.52x = 3,080,314,733.28
  5. Step 5: Solve for x
    x = 3,080,314,733.28/80,811.52
  6. Step 6: Final answer
    x = 38,117.27

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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.