Home / 99,982.40-137,990.72-57,532.73

Finding the Fourth Proportional to 99,982.40, 137,990.72 and 57,532.73

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Solution

The fourth proportional to 99,982.40, 137,990.72 and 57,532.73 is: 79,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,982.40 : 137,990.72 = 57,532.73 : x
  2. Step 2: Convert to fraction form
    99,982.40/137,990.72 = 57,532.73/x
  3. Step 3: Cross multiply
    99,982.40x = 137,990.72 × 57,532.73
  4. Step 4: Simplify right side
    99,982.40x = 7,938,982,290.14
  5. Step 5: Solve for x
    x = 7,938,982,290.14/99,982.40
  6. Step 6: Final answer
    x = 79,403.80

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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.