Home / 77,728.20-116,592.30-68,542.80

Finding the Fourth Proportional to 77,728.20, 116,592.30 and 68,542.80

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Solution

The fourth proportional to 77,728.20, 116,592.30 and 68,542.80 is: 102,814.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,728.20 : 116,592.30 = 68,542.80 : x
  2. Step 2: Convert to fraction form
    77,728.20/116,592.30 = 68,542.80/x
  3. Step 3: Cross multiply
    77,728.20x = 116,592.30 × 68,542.80
  4. Step 4: Simplify right side
    77,728.20x = 7,991,562,700.44
  5. Step 5: Solve for x
    x = 7,991,562,700.44/77,728.20
  6. Step 6: Final answer
    x = 102,814.20

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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.