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Finding the Fourth Proportional to 72,252.68, 108,920.57 and 67,435.88

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Solution

The fourth proportional to 72,252.68, 108,920.57 and 67,435.88 is: 101,659.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,252.68 : 108,920.57 = 67,435.88 : x
  2. Step 2: Convert to fraction form
    72,252.68/108,920.57 = 67,435.88/x
  3. Step 3: Cross multiply
    72,252.68x = 108,920.57 × 67,435.88
  4. Step 4: Simplify right side
    72,252.68x = 7,345,153,606.27
  5. Step 5: Solve for x
    x = 7,345,153,606.27/72,252.68
  6. Step 6: Final answer
    x = 101,659.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.