Home / 78,680.68-118,070.22-31,933.55

Finding the Fourth Proportional to 78,680.68, 118,070.22 and 31,933.55

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Solution

The fourth proportional to 78,680.68, 118,070.22 and 31,933.55 is: 47,920.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,680.68 : 118,070.22 = 31,933.55 : x
  2. Step 2: Convert to fraction form
    78,680.68/118,070.22 = 31,933.55/x
  3. Step 3: Cross multiply
    78,680.68x = 118,070.22 × 31,933.55
  4. Step 4: Simplify right side
    78,680.68x = 3,770,401,273.88
  5. Step 5: Solve for x
    x = 3,770,401,273.88/78,680.68
  6. Step 6: Final answer
    x = 47,920.29

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1.5x scale

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.