Home / 99,729.92-137,627.28-57,288.44

Finding the Fourth Proportional to 99,729.92, 137,627.28 and 57,288.44

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Solution

The fourth proportional to 99,729.92, 137,627.28 and 57,288.44 is: 79,058.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,729.92 : 137,627.28 = 57,288.44 : x
  2. Step 2: Convert to fraction form
    99,729.92/137,627.28 = 57,288.44/x
  3. Step 3: Cross multiply
    99,729.92x = 137,627.28 × 57,288.44
  4. Step 4: Simplify right side
    99,729.92x = 7,884,452,172.64
  5. Step 5: Solve for x
    x = 7,884,452,172.64/99,729.92
  6. Step 6: Final answer
    x = 79,058.04

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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.