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Finding the Fourth Proportional to 73,018.17, 109,731.74 and 43,440.57

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Solution

The fourth proportional to 73,018.17, 109,731.74 and 43,440.57 is: 65,282.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,018.17 : 109,731.74 = 43,440.57 : x
  2. Step 2: Convert to fraction form
    73,018.17/109,731.74 = 43,440.57/x
  3. Step 3: Cross multiply
    73,018.17x = 109,731.74 × 43,440.57
  4. Step 4: Simplify right side
    73,018.17x = 4,766,809,115.49
  5. Step 5: Solve for x
    x = 4,766,809,115.49/73,018.17
  6. Step 6: Final answer
    x = 65,282.51

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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.