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Finding the Fourth Proportional to 67.51, 101.32 and 47.19

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Solution

The fourth proportional to 67.51, 101.32 and 47.19 is: 70.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.51 : 101.32 = 47.19 : x
  2. Step 2: Convert to fraction form
    67.51/101.32 = 47.19/x
  3. Step 3: Cross multiply
    67.51x = 101.32 × 47.19
  4. Step 4: Simplify right side
    67.51x = 4,781.29
  5. Step 5: Solve for x
    x = 4,781.29/67.51
  6. Step 6: Final answer
    x = 70.82

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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.