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Finding the Fourth Proportional to 70,869.20, 106,534.20 and 50,235.60

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Solution

The fourth proportional to 70,869.20, 106,534.20 and 50,235.60 is: 75,516.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,869.20 : 106,534.20 = 50,235.60 : x
  2. Step 2: Convert to fraction form
    70,869.20/106,534.20 = 50,235.60/x
  3. Step 3: Cross multiply
    70,869.20x = 106,534.20 × 50,235.60
  4. Step 4: Simplify right side
    70,869.20x = 5,351,809,457.52
  5. Step 5: Solve for x
    x = 5,351,809,457.52/70,869.20
  6. Step 6: Final answer
    x = 75,516.72

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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.