Home / 90,078.23-124,302.55-49,789.59

Finding the Fourth Proportional to 90,078.23, 124,302.55 and 49,789.59

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Solution

The fourth proportional to 90,078.23, 124,302.55 and 49,789.59 is: 68,706.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,078.23 : 124,302.55 = 49,789.59 : x
  2. Step 2: Convert to fraction form
    90,078.23/124,302.55 = 49,789.59/x
  3. Step 3: Cross multiply
    90,078.23x = 124,302.55 × 49,789.59
  4. Step 4: Simplify right side
    90,078.23x = 6,188,972,503.20
  5. Step 5: Solve for x
    x = 6,188,972,503.20/90,078.23
  6. Step 6: Final answer
    x = 68,706.64

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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.