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Finding the Fourth Proportional to 72,367.60, 108,718.24 and 69,378.28

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Solution

The fourth proportional to 72,367.60, 108,718.24 and 69,378.28 is: 104,227.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,367.60 : 108,718.24 = 69,378.28 : x
  2. Step 2: Convert to fraction form
    72,367.60/108,718.24 = 69,378.28/x
  3. Step 3: Cross multiply
    72,367.60x = 108,718.24 × 69,378.28
  4. Step 4: Simplify right side
    72,367.60x = 7,542,684,495.83
  5. Step 5: Solve for x
    x = 7,542,684,495.83/72,367.60
  6. Step 6: Final answer
    x = 104,227.37

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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.