Home / 90,780.66-136,169.82-40,825.44

Finding the Fourth Proportional to 90,780.66, 136,169.82 and 40,825.44

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Solution

The fourth proportional to 90,780.66, 136,169.82 and 40,825.44 is: 61,237.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,780.66 : 136,169.82 = 40,825.44 : x
  2. Step 2: Convert to fraction form
    90,780.66/136,169.82 = 40,825.44/x
  3. Step 3: Cross multiply
    90,780.66x = 136,169.82 × 40,825.44
  4. Step 4: Simplify right side
    90,780.66x = 5,559,192,816.22
  5. Step 5: Solve for x
    x = 5,559,192,816.22/90,780.66
  6. Step 6: Final answer
    x = 61,237.63

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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.