Home / 99,727.77-137,622.92-57,286.65

Finding the Fourth Proportional to 99,727.77, 137,622.92 and 57,286.65

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Solution

The fourth proportional to 99,727.77, 137,622.92 and 57,286.65 is: 79,054.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,727.77 : 137,622.92 = 57,286.65 : x
  2. Step 2: Convert to fraction form
    99,727.77/137,622.92 = 57,286.65/x
  3. Step 3: Cross multiply
    99,727.77x = 137,622.92 × 57,286.65
  4. Step 4: Simplify right side
    99,727.77x = 7,883,955,763.58
  5. Step 5: Solve for x
    x = 7,883,955,763.58/99,727.77
  6. Step 6: Final answer
    x = 79,054.77

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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.