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Finding the Fourth Proportional to 67,642.80, 101,353.38 and 36,019.28

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Solution

The fourth proportional to 67,642.80, 101,353.38 and 36,019.28 is: 53,969.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,642.80 : 101,353.38 = 36,019.28 : x
  2. Step 2: Convert to fraction form
    67,642.80/101,353.38 = 36,019.28/x
  3. Step 3: Cross multiply
    67,642.80x = 101,353.38 × 36,019.28
  4. Step 4: Simplify right side
    67,642.80x = 3,650,675,891.48
  5. Step 5: Solve for x
    x = 3,650,675,891.48/67,642.80
  6. Step 6: Final answer
    x = 53,969.91

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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.