Home / 84,721.53-126,993.62-28,542.22

Finding the Fourth Proportional to 84,721.53, 126,993.62 and 28,542.22

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Solution

The fourth proportional to 84,721.53, 126,993.62 and 28,542.22 is: 42,783.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,721.53 : 126,993.62 = 28,542.22 : x
  2. Step 2: Convert to fraction form
    84,721.53/126,993.62 = 28,542.22/x
  3. Step 3: Cross multiply
    84,721.53x = 126,993.62 × 28,542.22
  4. Step 4: Simplify right side
    84,721.53x = 3,624,680,308.85
  5. Step 5: Solve for x
    x = 3,624,680,308.85/84,721.53
  6. Step 6: Final answer
    x = 42,783.46

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1.5x scale

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.