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Finding the Fourth Proportional to 59.75, 82.47 and 34.86

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Solution

The fourth proportional to 59.75, 82.47 and 34.86 is: 48.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.75 : 82.47 = 34.86 : x
  2. Step 2: Convert to fraction form
    59.75/82.47 = 34.86/x
  3. Step 3: Cross multiply
    59.75x = 82.47 × 34.86
  4. Step 4: Simplify right side
    59.75x = 2,875.15
  5. Step 5: Solve for x
    x = 2,875.15/59.75
  6. Step 6: Final answer
    x = 48.12

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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.