Home / 80,790.76-121,205.40-25,386.76

Finding the Fourth Proportional to 80,790.76, 121,205.40 and 25,386.76

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Solution

The fourth proportional to 80,790.76, 121,205.40 and 25,386.76 is: 38,086.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,790.76 : 121,205.40 = 25,386.76 : x
  2. Step 2: Convert to fraction form
    80,790.76/121,205.40 = 25,386.76/x
  3. Step 3: Cross multiply
    80,790.76x = 121,205.40 × 25,386.76
  4. Step 4: Simplify right side
    80,790.76x = 3,077,012,400.50
  5. Step 5: Solve for x
    x = 3,077,012,400.50/80,790.76
  6. Step 6: Final answer
    x = 38,086.19

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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.