Home / 90,734.69-125,215.33-49,900.43

Finding the Fourth Proportional to 90,734.69, 125,215.33 and 49,900.43

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Solution

The fourth proportional to 90,734.69, 125,215.33 and 49,900.43 is: 68,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,734.69 : 125,215.33 = 49,900.43 : x
  2. Step 2: Convert to fraction form
    90,734.69/125,215.33 = 49,900.43/x
  3. Step 3: Cross multiply
    90,734.69x = 125,215.33 × 49,900.43
  4. Step 4: Simplify right side
    90,734.69x = 6,248,298,809.59
  5. Step 5: Solve for x
    x = 6,248,298,809.59/90,734.69
  6. Step 6: Final answer
    x = 68,863.40

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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.