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Finding the Fourth Proportional to 67,872.52, 101,868.18 and 36,307.72

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Solution

The fourth proportional to 67,872.52, 101,868.18 and 36,307.72 is: 54,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,872.52 : 101,868.18 = 36,307.72 : x
  2. Step 2: Convert to fraction form
    67,872.52/101,868.18 = 36,307.72/x
  3. Step 3: Cross multiply
    67,872.52x = 101,868.18 × 36,307.72
  4. Step 4: Simplify right side
    67,872.52x = 3,698,601,356.35
  5. Step 5: Solve for x
    x = 3,698,601,356.35/67,872.52
  6. Step 6: Final answer
    x = 54,493.36

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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.