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Finding the Fourth Proportional to 73,901.60, 110,868.78 and 21,306.98

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Solution

The fourth proportional to 73,901.60, 110,868.78 and 21,306.98 is: 31,965.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,901.60 : 110,868.78 = 21,306.98 : x
  2. Step 2: Convert to fraction form
    73,901.60/110,868.78 = 21,306.98/x
  3. Step 3: Cross multiply
    73,901.60x = 110,868.78 × 21,306.98
  4. Step 4: Simplify right side
    73,901.60x = 2,362,278,878.08
  5. Step 5: Solve for x
    x = 2,362,278,878.08/73,901.60
  6. Step 6: Final answer
    x = 31,965.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.