Home / 84,721.97-126,994.29-28,542.67

Finding the Fourth Proportional to 84,721.97, 126,994.29 and 28,542.67

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Solution

The fourth proportional to 84,721.97, 126,994.29 and 28,542.67 is: 42,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,721.97 : 126,994.29 = 28,542.67 : x
  2. Step 2: Convert to fraction form
    84,721.97/126,994.29 = 28,542.67/x
  3. Step 3: Cross multiply
    84,721.97x = 126,994.29 × 28,542.67
  4. Step 4: Simplify right side
    84,721.97x = 3,624,755,926.31
  5. Step 5: Solve for x
    x = 3,624,755,926.31/84,721.97
  6. Step 6: Final answer
    x = 42,784.13

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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.