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Finding the Fourth Proportional to 76,614.80, 114,922.20 and 71,085.20

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Solution

The fourth proportional to 76,614.80, 114,922.20 and 71,085.20 is: 106,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,614.80 : 114,922.20 = 71,085.20 : x
  2. Step 2: Convert to fraction form
    76,614.80/114,922.20 = 71,085.20/x
  3. Step 3: Cross multiply
    76,614.80x = 114,922.20 × 71,085.20
  4. Step 4: Simplify right side
    76,614.80x = 8,169,267,571.44
  5. Step 5: Solve for x
    x = 8,169,267,571.44/76,614.80
  6. Step 6: Final answer
    x = 106,627.80

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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.