Home / 71,345.85-107,018.77-18,755.25

Finding the Fourth Proportional to 71,345.85, 107,018.77 and 18,755.25

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Solution

The fourth proportional to 71,345.85, 107,018.77 and 18,755.25 is: 28,132.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,345.85 : 107,018.77 = 18,755.25 : x
  2. Step 2: Convert to fraction form
    71,345.85/107,018.77 = 18,755.25/x
  3. Step 3: Cross multiply
    71,345.85x = 107,018.77 × 18,755.25
  4. Step 4: Simplify right side
    71,345.85x = 2,007,163,786.04
  5. Step 5: Solve for x
    x = 2,007,163,786.04/71,345.85
  6. Step 6: Final answer
    x = 28,132.87

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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.