Home / 91,479.36-137,199.84-25,800

Finding the Fourth Proportional to 91,479.36, 137,199.84 and 25,800

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Solution

The fourth proportional to 91,479.36, 137,199.84 and 25,800 is: 38,694.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,479.36 : 137,199.84 = 25,800 : x
  2. Step 2: Convert to fraction form
    91,479.36/137,199.84 = 25,800/x
  3. Step 3: Cross multiply
    91,479.36x = 137,199.84 × 25,800
  4. Step 4: Simplify right side
    91,479.36x = 3,539,755,872
  5. Step 5: Solve for x
    x = 3,539,755,872/91,479.36
  6. Step 6: Final answer
    x = 38,694.59

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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.