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Finding the Fourth Proportional to 73,818.90, 110,724.48 and 21,226.32

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Solution

The fourth proportional to 73,818.90, 110,724.48 and 21,226.32 is: 31,838.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,818.90 : 110,724.48 = 21,226.32 : x
  2. Step 2: Convert to fraction form
    73,818.90/110,724.48 = 21,226.32/x
  3. Step 3: Cross multiply
    73,818.90x = 110,724.48 × 21,226.32
  4. Step 4: Simplify right side
    73,818.90x = 2,350,273,244.31
  5. Step 5: Solve for x
    x = 2,350,273,244.31/73,818.90
  6. Step 6: Final answer
    x = 31,838.37

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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.