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Finding the Fourth Proportional to 70,119.45, 105,095.52 and 40,474.65

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Solution

The fourth proportional to 70,119.45, 105,095.52 and 40,474.65 is: 60,663.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,119.45 : 105,095.52 = 40,474.65 : x
  2. Step 2: Convert to fraction form
    70,119.45/105,095.52 = 40,474.65/x
  3. Step 3: Cross multiply
    70,119.45x = 105,095.52 × 40,474.65
  4. Step 4: Simplify right side
    70,119.45x = 4,253,704,388.57
  5. Step 5: Solve for x
    x = 4,253,704,388.57/70,119.45
  6. Step 6: Final answer
    x = 60,663.69

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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.