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Finding the Fourth Proportional to 70,049.16, 104,933.37 and 66,369.72

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Solution

The fourth proportional to 70,049.16, 104,933.37 and 66,369.72 is: 99,421.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,049.16 : 104,933.37 = 66,369.72 : x
  2. Step 2: Convert to fraction form
    70,049.16/104,933.37 = 66,369.72/x
  3. Step 3: Cross multiply
    70,049.16x = 104,933.37 × 66,369.72
  4. Step 4: Simplify right side
    70,049.16x = 6,964,398,385.56
  5. Step 5: Solve for x
    x = 6,964,398,385.56/70,049.16
  6. Step 6: Final answer
    x = 99,421.58

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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.