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Finding the Fourth Proportional to 73.45, 109.92 and 58.26

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Solution

The fourth proportional to 73.45, 109.92 and 58.26 is: 87.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.45 : 109.92 = 58.26 : x
  2. Step 2: Convert to fraction form
    73.45/109.92 = 58.26/x
  3. Step 3: Cross multiply
    73.45x = 109.92 × 58.26
  4. Step 4: Simplify right side
    73.45x = 6,403.39
  5. Step 5: Solve for x
    x = 6,403.39/73.45
  6. Step 6: Final answer
    x = 87.18

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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.