Home / 78,862.12-118,227.84-31,447.96

Finding the Fourth Proportional to 78,862.12, 118,227.84 and 31,447.96

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Solution

The fourth proportional to 78,862.12, 118,227.84 and 31,447.96 is: 47,145.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,862.12 : 118,227.84 = 31,447.96 : x
  2. Step 2: Convert to fraction form
    78,862.12/118,227.84 = 31,447.96/x
  3. Step 3: Cross multiply
    78,862.12x = 118,227.84 × 31,447.96
  4. Step 4: Simplify right side
    78,862.12x = 3,718,024,383.21
  5. Step 5: Solve for x
    x = 3,718,024,383.21/78,862.12
  6. Step 6: Final answer
    x = 47,145.88

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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.