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Finding the Fourth Proportional to 71,345.97, 107,018.96 and 18,755.37

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Solution

The fourth proportional to 71,345.97, 107,018.96 and 18,755.37 is: 28,133.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,345.97 : 107,018.96 = 18,755.37 : x
  2. Step 2: Convert to fraction form
    71,345.97/107,018.96 = 18,755.37/x
  3. Step 3: Cross multiply
    71,345.97x = 107,018.96 × 18,755.37
  4. Step 4: Simplify right side
    71,345.97x = 2,007,180,098.04
  5. Step 5: Solve for x
    x = 2,007,180,098.04/71,345.97
  6. Step 6: Final answer
    x = 28,133.06

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1.5x scale

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.