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Finding the Fourth Proportional to 70,072.68, 105,004.10 and 36,261.92

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Solution

The fourth proportional to 70,072.68, 105,004.10 and 36,261.92 is: 54,338.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,072.68 : 105,004.10 = 36,261.92 : x
  2. Step 2: Convert to fraction form
    70,072.68/105,004.10 = 36,261.92/x
  3. Step 3: Cross multiply
    70,072.68x = 105,004.10 × 36,261.92
  4. Step 4: Simplify right side
    70,072.68x = 3,807,650,273.87
  5. Step 5: Solve for x
    x = 3,807,650,273.87/70,072.68
  6. Step 6: Final answer
    x = 54,338.58

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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.