Home / 80,774.46-121,161.74-38,644.64

Finding the Fourth Proportional to 80,774.46, 121,161.74 and 38,644.64

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Solution

The fourth proportional to 80,774.46, 121,161.74 and 38,644.64 is: 57,966.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,774.46 : 121,161.74 = 38,644.64 : x
  2. Step 2: Convert to fraction form
    80,774.46/121,161.74 = 38,644.64/x
  3. Step 3: Cross multiply
    80,774.46x = 121,161.74 × 38,644.64
  4. Step 4: Simplify right side
    80,774.46x = 4,682,251,025.04
  5. Step 5: Solve for x
    x = 4,682,251,025.04/80,774.46
  6. Step 6: Final answer
    x = 57,966.98

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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.