Home / 90,751.89-125,240.64-49,917.74

Finding the Fourth Proportional to 90,751.89, 125,240.64 and 49,917.74

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Solution

The fourth proportional to 90,751.89, 125,240.64 and 49,917.74 is: 68,888.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,751.89 : 125,240.64 = 49,917.74 : x
  2. Step 2: Convert to fraction form
    90,751.89/125,240.64 = 49,917.74/x
  3. Step 3: Cross multiply
    90,751.89x = 125,240.64 × 49,917.74
  4. Step 4: Simplify right side
    90,751.89x = 6,251,729,704.95
  5. Step 5: Solve for x
    x = 6,251,729,704.95/90,751.89
  6. Step 6: Final answer
    x = 68,888.15

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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.