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Finding the Fourth Proportional to 59.61, 89.01 and 53.55

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Solution

The fourth proportional to 59.61, 89.01 and 53.55 is: 79.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.61 : 89.01 = 53.55 : x
  2. Step 2: Convert to fraction form
    59.61/89.01 = 53.55/x
  3. Step 3: Cross multiply
    59.61x = 89.01 × 53.55
  4. Step 4: Simplify right side
    59.61x = 4,766.49
  5. Step 5: Solve for x
    x = 4,766.49/59.61
  6. Step 6: Final answer
    x = 79.96

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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.