Home / 71,976.09-99,322.50-39,711.09

Finding the Fourth Proportional to 71,976.09, 99,322.50 and 39,711.09

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Solution

The fourth proportional to 71,976.09, 99,322.50 and 39,711.09 is: 54,798.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.09 : 99,322.50 = 39,711.09 : x
  2. Step 2: Convert to fraction form
    71,976.09/99,322.50 = 39,711.09/x
  3. Step 3: Cross multiply
    71,976.09x = 99,322.50 × 39,711.09
  4. Step 4: Simplify right side
    71,976.09x = 3,944,205,257.90
  5. Step 5: Solve for x
    x = 3,944,205,257.90/71,976.09
  6. Step 6: Final answer
    x = 54,798.82

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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.