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Finding the Fourth Proportional to 67,188.29, 100,720.04 and 29,728.35

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Solution

The fourth proportional to 67,188.29, 100,720.04 and 29,728.35 is: 44,564.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,188.29 : 100,720.04 = 29,728.35 : x
  2. Step 2: Convert to fraction form
    67,188.29/100,720.04 = 29,728.35/x
  3. Step 3: Cross multiply
    67,188.29x = 100,720.04 × 29,728.35
  4. Step 4: Simplify right side
    67,188.29x = 2,994,240,452.49
  5. Step 5: Solve for x
    x = 2,994,240,452.49/67,188.29
  6. Step 6: Final answer
    x = 44,564.92

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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.