Home / 82,135.15-123,202.75-28,868.95

Finding the Fourth Proportional to 82,135.15, 123,202.75 and 28,868.95

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Solution

The fourth proportional to 82,135.15, 123,202.75 and 28,868.95 is: 43,303.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,135.15 : 123,202.75 = 28,868.95 : x
  2. Step 2: Convert to fraction form
    82,135.15/123,202.75 = 28,868.95/x
  3. Step 3: Cross multiply
    82,135.15x = 123,202.75 × 28,868.95
  4. Step 4: Simplify right side
    82,135.15x = 3,556,734,029.61
  5. Step 5: Solve for x
    x = 3,556,734,029.61/82,135.15
  6. Step 6: Final answer
    x = 43,303.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.