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Finding the Fourth Proportional to 70,087.78, 105,162.54 and 36,800.11

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Solution

The fourth proportional to 70,087.78, 105,162.54 and 36,800.11 is: 55,216.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,087.78 : 105,162.54 = 36,800.11 : x
  2. Step 2: Convert to fraction form
    70,087.78/105,162.54 = 36,800.11/x
  3. Step 3: Cross multiply
    70,087.78x = 105,162.54 × 36,800.11
  4. Step 4: Simplify right side
    70,087.78x = 3,869,993,039.88
  5. Step 5: Solve for x
    x = 3,869,993,039.88/70,087.78
  6. Step 6: Final answer
    x = 55,216.37

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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.