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Finding the Fourth Proportional to 61.53, 91.65 and 58.41

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Solution

The fourth proportional to 61.53, 91.65 and 58.41 is: 87.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.53 : 91.65 = 58.41 : x
  2. Step 2: Convert to fraction form
    61.53/91.65 = 58.41/x
  3. Step 3: Cross multiply
    61.53x = 91.65 × 58.41
  4. Step 4: Simplify right side
    61.53x = 5,353.28
  5. Step 5: Solve for x
    x = 5,353.28/61.53
  6. Step 6: Final answer
    x = 87.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.