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Finding the Fourth Proportional to 67,636.80, 101,455.20 and 52,891.20

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Solution

The fourth proportional to 67,636.80, 101,455.20 and 52,891.20 is: 79,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,636.80 : 101,455.20 = 52,891.20 : x
  2. Step 2: Convert to fraction form
    67,636.80/101,455.20 = 52,891.20/x
  3. Step 3: Cross multiply
    67,636.80x = 101,455.20 × 52,891.20
  4. Step 4: Simplify right side
    67,636.80x = 5,366,087,274.24
  5. Step 5: Solve for x
    x = 5,366,087,274.24/67,636.80
  6. Step 6: Final answer
    x = 79,336.80

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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.