Home / 84,578.84-126,819.07-31,992.43

Finding the Fourth Proportional to 84,578.84, 126,819.07 and 31,992.43

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Solution

The fourth proportional to 84,578.84, 126,819.07 and 31,992.43 is: 47,970.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,578.84 : 126,819.07 = 31,992.43 : x
  2. Step 2: Convert to fraction form
    84,578.84/126,819.07 = 31,992.43/x
  3. Step 3: Cross multiply
    84,578.84x = 126,819.07 × 31,992.43
  4. Step 4: Simplify right side
    84,578.84x = 4,057,249,822.61
  5. Step 5: Solve for x
    x = 4,057,249,822.61/84,578.84
  6. Step 6: Final answer
    x = 47,970.03

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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.