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Finding the Fourth Proportional to 67.84, 93.52 and 53.04

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Solution

The fourth proportional to 67.84, 93.52 and 53.04 is: 73.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.84 : 93.52 = 53.04 : x
  2. Step 2: Convert to fraction form
    67.84/93.52 = 53.04/x
  3. Step 3: Cross multiply
    67.84x = 93.52 × 53.04
  4. Step 4: Simplify right side
    67.84x = 4,960.30
  5. Step 5: Solve for x
    x = 4,960.30/67.84
  6. Step 6: Final answer
    x = 73.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.