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Finding the Fourth Proportional to 75,087.20, 112,630.80 and 72,462.80

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Solution

The fourth proportional to 75,087.20, 112,630.80 and 72,462.80 is: 108,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,087.20 : 112,630.80 = 72,462.80 : x
  2. Step 2: Convert to fraction form
    75,087.20/112,630.80 = 72,462.80/x
  3. Step 3: Cross multiply
    75,087.20x = 112,630.80 × 72,462.80
  4. Step 4: Simplify right side
    75,087.20x = 8,161,543,134.24
  5. Step 5: Solve for x
    x = 8,161,543,134.24/75,087.20
  6. Step 6: Final answer
    x = 108,694.20

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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.