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Finding the Fourth Proportional to 73.77, 101.86 and 49.20

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Solution

The fourth proportional to 73.77, 101.86 and 49.20 is: 67.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.77 : 101.86 = 49.20 : x
  2. Step 2: Convert to fraction form
    73.77/101.86 = 49.20/x
  3. Step 3: Cross multiply
    73.77x = 101.86 × 49.20
  4. Step 4: Simplify right side
    73.77x = 5,011.00
  5. Step 5: Solve for x
    x = 5,011.00/73.77
  6. Step 6: Final answer
    x = 67.93

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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.