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Finding the Fourth Proportional to 89.93, 124.04 and 58.85

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Solution

The fourth proportional to 89.93, 124.04 and 58.85 is: 81.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.93 : 124.04 = 58.85 : x
  2. Step 2: Convert to fraction form
    89.93/124.04 = 58.85/x
  3. Step 3: Cross multiply
    89.93x = 124.04 × 58.85
  4. Step 4: Simplify right side
    89.93x = 7,300.18
  5. Step 5: Solve for x
    x = 7,300.18/89.93
  6. Step 6: Final answer
    x = 81.18

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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.