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Finding the Fourth Proportional to 67,928.80, 101,698.80 and 52,247.20

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Solution

The fourth proportional to 67,928.80, 101,698.80 and 52,247.20 is: 78,221.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,928.80 : 101,698.80 = 52,247.20 : x
  2. Step 2: Convert to fraction form
    67,928.80/101,698.80 = 52,247.20/x
  3. Step 3: Cross multiply
    67,928.80x = 101,698.80 × 52,247.20
  4. Step 4: Simplify right side
    67,928.80x = 5,313,477,543.36
  5. Step 5: Solve for x
    x = 5,313,477,543.36/67,928.80
  6. Step 6: Final answer
    x = 78,221.28

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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.