Home / 80,815.32-121,222.97-25,411.32

Finding the Fourth Proportional to 80,815.32, 121,222.97 and 25,411.32

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Solution

The fourth proportional to 80,815.32, 121,222.97 and 25,411.32 is: 38,116.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,815.32 : 121,222.97 = 25,411.32 : x
  2. Step 2: Convert to fraction form
    80,815.32/121,222.97 = 25,411.32/x
  3. Step 3: Cross multiply
    80,815.32x = 121,222.97 × 25,411.32
  4. Step 4: Simplify right side
    80,815.32x = 3,080,435,554.96
  5. Step 5: Solve for x
    x = 3,080,435,554.96/80,815.32
  6. Step 6: Final answer
    x = 38,116.98

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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.