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Finding the Fourth Proportional to 70,108.84, 105,194.09 and 36,821.18

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Solution

The fourth proportional to 70,108.84, 105,194.09 and 36,821.18 is: 55,247.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,108.84 : 105,194.09 = 36,821.18 : x
  2. Step 2: Convert to fraction form
    70,108.84/105,194.09 = 36,821.18/x
  3. Step 3: Cross multiply
    70,108.84x = 105,194.09 × 36,821.18
  4. Step 4: Simplify right side
    70,108.84x = 3,873,370,877.86
  5. Step 5: Solve for x
    x = 3,873,370,877.86/70,108.84
  6. Step 6: Final answer
    x = 55,247.97

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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.