Home / 90,823.25-136,256.75-28,493.75

Finding the Fourth Proportional to 90,823.25, 136,256.75 and 28,493.75

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Solution

The fourth proportional to 90,823.25, 136,256.75 and 28,493.75 is: 42,747.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,823.25 : 136,256.75 = 28,493.75 : x
  2. Step 2: Convert to fraction form
    90,823.25/136,256.75 = 28,493.75/x
  3. Step 3: Cross multiply
    90,823.25x = 136,256.75 × 28,493.75
  4. Step 4: Simplify right side
    90,823.25x = 3,882,465,770.31
  5. Step 5: Solve for x
    x = 3,882,465,770.31/90,823.25
  6. Step 6: Final answer
    x = 42,747.49

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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.