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Finding the Fourth Proportional to 70,365.60, 105,634.80 and 69,847.20

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Solution

The fourth proportional to 70,365.60, 105,634.80 and 69,847.20 is: 104,856.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,365.60 : 105,634.80 = 69,847.20 : x
  2. Step 2: Convert to fraction form
    70,365.60/105,634.80 = 69,847.20/x
  3. Step 3: Cross multiply
    70,365.60x = 105,634.80 × 69,847.20
  4. Step 4: Simplify right side
    70,365.60x = 7,378,295,002.56
  5. Step 5: Solve for x
    x = 7,378,295,002.56/70,365.60
  6. Step 6: Final answer
    x = 104,856.56

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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.