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Finding the Fourth Proportional to 67,169.34, 100,768.98 and 20,425.86

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Solution

The fourth proportional to 67,169.34, 100,768.98 and 20,425.86 is: 30,643.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,169.34 : 100,768.98 = 20,425.86 : x
  2. Step 2: Convert to fraction form
    67,169.34/100,768.98 = 20,425.86/x
  3. Step 3: Cross multiply
    67,169.34x = 100,768.98 × 20,425.86
  4. Step 4: Simplify right side
    67,169.34x = 2,058,293,077.82
  5. Step 5: Solve for x
    x = 2,058,293,077.82/67,169.34
  6. Step 6: Final answer
    x = 30,643.34

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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.