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Finding the Fourth Proportional to 70,019.35, 105,016.57 and 27,895.91

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Solution

The fourth proportional to 70,019.35, 105,016.57 and 27,895.91 is: 41,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,019.35 : 105,016.57 = 27,895.91 : x
  2. Step 2: Convert to fraction form
    70,019.35/105,016.57 = 27,895.91/x
  3. Step 3: Cross multiply
    70,019.35x = 105,016.57 × 27,895.91
  4. Step 4: Simplify right side
    70,019.35x = 2,929,532,190.41
  5. Step 5: Solve for x
    x = 2,929,532,190.41/70,019.35
  6. Step 6: Final answer
    x = 41,838.90

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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.