Home / 71,979.45-99,331.32-39,713.19

Finding the Fourth Proportional to 71,979.45, 99,331.32 and 39,713.19

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Solution

The fourth proportional to 71,979.45, 99,331.32 and 39,713.19 is: 54,804.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,979.45 : 99,331.32 = 39,713.19 : x
  2. Step 2: Convert to fraction form
    71,979.45/99,331.32 = 39,713.19/x
  3. Step 3: Cross multiply
    71,979.45x = 99,331.32 × 39,713.19
  4. Step 4: Simplify right side
    71,979.45x = 3,944,763,584.11
  5. Step 5: Solve for x
    x = 3,944,763,584.11/71,979.45
  6. Step 6: Final answer
    x = 54,804.03

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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.