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Finding the Fourth Proportional to 73.77, 101.76 and 45.75

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Solution

The fourth proportional to 73.77, 101.76 and 45.75 is: 63.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.77 : 101.76 = 45.75 : x
  2. Step 2: Convert to fraction form
    73.77/101.76 = 45.75/x
  3. Step 3: Cross multiply
    73.77x = 101.76 × 45.75
  4. Step 4: Simplify right side
    73.77x = 4,655.01
  5. Step 5: Solve for x
    x = 4,655.01/73.77
  6. Step 6: Final answer
    x = 63.11

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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.