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Finding the Fourth Proportional to 67.71, 93.43 and 45.91

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Solution

The fourth proportional to 67.71, 93.43 and 45.91 is: 63.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.71 : 93.43 = 45.91 : x
  2. Step 2: Convert to fraction form
    67.71/93.43 = 45.91/x
  3. Step 3: Cross multiply
    67.71x = 93.43 × 45.91
  4. Step 4: Simplify right side
    67.71x = 4,289.37
  5. Step 5: Solve for x
    x = 4,289.37/67.71
  6. Step 6: Final answer
    x = 63.35

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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.