Home / 76,258.08-114,348.12-31,872.72

Finding the Fourth Proportional to 76,258.08, 114,348.12 and 31,872.72

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Solution

The fourth proportional to 76,258.08, 114,348.12 and 31,872.72 is: 47,792.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,258.08 : 114,348.12 = 31,872.72 : x
  2. Step 2: Convert to fraction form
    76,258.08/114,348.12 = 31,872.72/x
  3. Step 3: Cross multiply
    76,258.08x = 114,348.12 × 31,872.72
  4. Step 4: Simplify right side
    76,258.08x = 3,644,585,611.29
  5. Step 5: Solve for x
    x = 3,644,585,611.29/76,258.08
  6. Step 6: Final answer
    x = 47,792.78

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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.