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Finding the Fourth Proportional to 73.68, 111.05 and 60.32

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Solution

The fourth proportional to 73.68, 111.05 and 60.32 is: 90.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.68 : 111.05 = 60.32 : x
  2. Step 2: Convert to fraction form
    73.68/111.05 = 60.32/x
  3. Step 3: Cross multiply
    73.68x = 111.05 × 60.32
  4. Step 4: Simplify right side
    73.68x = 6,697.68
  5. Step 5: Solve for x
    x = 6,697.68/73.68
  6. Step 6: Final answer
    x = 90.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.