Home / 80,767.40-121,223.10-47,445.80

Finding the Fourth Proportional to 80,767.40, 121,223.10 and 47,445.80

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Solution

The fourth proportional to 80,767.40, 121,223.10 and 47,445.80 is: 71,211.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,767.40 : 121,223.10 = 47,445.80 : x
  2. Step 2: Convert to fraction form
    80,767.40/121,223.10 = 47,445.80/x
  3. Step 3: Cross multiply
    80,767.40x = 121,223.10 × 47,445.80
  4. Step 4: Simplify right side
    80,767.40x = 5,751,526,957.98
  5. Step 5: Solve for x
    x = 5,751,526,957.98/80,767.40
  6. Step 6: Final answer
    x = 71,211.00

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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.