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Finding the Fourth Proportional to 73,431, 101,334.78 and 43,623

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Solution

The fourth proportional to 73,431, 101,334.78 and 43,623 is: 60,199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,431 : 101,334.78 = 43,623 : x
  2. Step 2: Convert to fraction form
    73,431/101,334.78 = 43,623/x
  3. Step 3: Cross multiply
    73,431x = 101,334.78 × 43,623
  4. Step 4: Simplify right side
    73,431x = 4,420,527,107.94
  5. Step 5: Solve for x
    x = 4,420,527,107.94/73,431
  6. Step 6: Final answer
    x = 60,199.74

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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.