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Finding the Fourth Proportional to 61.76, 93.11 and 59.87

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Solution

The fourth proportional to 61.76, 93.11 and 59.87 is: 90.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.76 : 93.11 = 59.87 : x
  2. Step 2: Convert to fraction form
    61.76/93.11 = 59.87/x
  3. Step 3: Cross multiply
    61.76x = 93.11 × 59.87
  4. Step 4: Simplify right side
    61.76x = 5,574.50
  5. Step 5: Solve for x
    x = 5,574.50/61.76
  6. Step 6: Final answer
    x = 90.26

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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.