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Finding the Fourth Proportional to 73.46, 101.40 and 66.04

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Solution

The fourth proportional to 73.46, 101.40 and 66.04 is: 91.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.46 : 101.40 = 66.04 : x
  2. Step 2: Convert to fraction form
    73.46/101.40 = 66.04/x
  3. Step 3: Cross multiply
    73.46x = 101.40 × 66.04
  4. Step 4: Simplify right side
    73.46x = 6,696.61
  5. Step 5: Solve for x
    x = 6,696.61/73.46
  6. Step 6: Final answer
    x = 91.16

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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.