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Finding the Fourth Proportional to 75.16, 112.68 and 44.77

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Solution

The fourth proportional to 75.16, 112.68 and 44.77 is: 67.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.16 : 112.68 = 44.77 : x
  2. Step 2: Convert to fraction form
    75.16/112.68 = 44.77/x
  3. Step 3: Cross multiply
    75.16x = 112.68 × 44.77
  4. Step 4: Simplify right side
    75.16x = 5,044.68
  5. Step 5: Solve for x
    x = 5,044.68/75.16
  6. Step 6: Final answer
    x = 67.12

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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.