Home / 81,044.20-111,891.54-52,378.84

Finding the Fourth Proportional to 81,044.20, 111,891.54 and 52,378.84

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Solution

The fourth proportional to 81,044.20, 111,891.54 and 52,378.84 is: 72,315.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,044.20 : 111,891.54 = 52,378.84 : x
  2. Step 2: Convert to fraction form
    81,044.20/111,891.54 = 52,378.84/x
  3. Step 3: Cross multiply
    81,044.20x = 111,891.54 × 52,378.84
  4. Step 4: Simplify right side
    81,044.20x = 5,860,749,071.01
  5. Step 5: Solve for x
    x = 5,860,749,071.01/81,044.20
  6. Step 6: Final answer
    x = 72,315.47

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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.