Home / 84,300.88-126,408.84-28,121.52

Finding the Fourth Proportional to 84,300.88, 126,408.84 and 28,121.52

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Solution

The fourth proportional to 84,300.88, 126,408.84 and 28,121.52 is: 42,168.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,300.88 : 126,408.84 = 28,121.52 : x
  2. Step 2: Convert to fraction form
    84,300.88/126,408.84 = 28,121.52/x
  3. Step 3: Cross multiply
    84,300.88x = 126,408.84 × 28,121.52
  4. Step 4: Simplify right side
    84,300.88x = 3,554,808,722.24
  5. Step 5: Solve for x
    x = 3,554,808,722.24/84,300.88
  6. Step 6: Final answer
    x = 42,168.11

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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.