Home / 81,459.39-122,180.07-21,493.95

Finding the Fourth Proportional to 81,459.39, 122,180.07 and 21,493.95

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Solution

The fourth proportional to 81,459.39, 122,180.07 and 21,493.95 is: 32,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,459.39 : 122,180.07 = 21,493.95 : x
  2. Step 2: Convert to fraction form
    81,459.39/122,180.07 = 21,493.95/x
  3. Step 3: Cross multiply
    81,459.39x = 122,180.07 × 21,493.95
  4. Step 4: Simplify right side
    81,459.39x = 2,626,132,315.58
  5. Step 5: Solve for x
    x = 2,626,132,315.58/81,459.39
  6. Step 6: Final answer
    x = 32,238.55

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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.