Home / 90,943.71-125,503.88-55,135.23

Finding the Fourth Proportional to 90,943.71, 125,503.88 and 55,135.23

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Solution

The fourth proportional to 90,943.71, 125,503.88 and 55,135.23 is: 76,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,943.71 : 125,503.88 = 55,135.23 : x
  2. Step 2: Convert to fraction form
    90,943.71/125,503.88 = 55,135.23/x
  3. Step 3: Cross multiply
    90,943.71x = 125,503.88 × 55,135.23
  4. Step 4: Simplify right side
    90,943.71x = 6,919,685,014.02
  5. Step 5: Solve for x
    x = 6,919,685,014.02/90,943.71
  6. Step 6: Final answer
    x = 76,087.56

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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.