Home / 99,949.68-137,928.06-57,531.60

Finding the Fourth Proportional to 99,949.68, 137,928.06 and 57,531.60

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Solution

The fourth proportional to 99,949.68, 137,928.06 and 57,531.60 is: 79,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,949.68 : 137,928.06 = 57,531.60 : x
  2. Step 2: Convert to fraction form
    99,949.68/137,928.06 = 57,531.60/x
  3. Step 3: Cross multiply
    99,949.68x = 137,928.06 × 57,531.60
  4. Step 4: Simplify right side
    99,949.68x = 7,935,221,976.70
  5. Step 5: Solve for x
    x = 7,935,221,976.70/99,949.68
  6. Step 6: Final answer
    x = 79,392.17

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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.