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Finding the Fourth Proportional to 70,280.44, 105,251.72 and 40,203.48

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Solution

The fourth proportional to 70,280.44, 105,251.72 and 40,203.48 is: 60,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,280.44 : 105,251.72 = 40,203.48 : x
  2. Step 2: Convert to fraction form
    70,280.44/105,251.72 = 40,203.48/x
  3. Step 3: Cross multiply
    70,280.44x = 105,251.72 × 40,203.48
  4. Step 4: Simplify right side
    70,280.44x = 4,231,485,419.99
  5. Step 5: Solve for x
    x = 4,231,485,419.99/70,280.44
  6. Step 6: Final answer
    x = 60,208.58

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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.