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Finding the Fourth Proportional to 73.54, 101.37 and 61.79

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Solution

The fourth proportional to 73.54, 101.37 and 61.79 is: 85.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.54 : 101.37 = 61.79 : x
  2. Step 2: Convert to fraction form
    73.54/101.37 = 61.79/x
  3. Step 3: Cross multiply
    73.54x = 101.37 × 61.79
  4. Step 4: Simplify right side
    73.54x = 6,263.91
  5. Step 5: Solve for x
    x = 6,263.91/73.54
  6. Step 6: Final answer
    x = 85.18

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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.