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Finding the Fourth Proportional to 72,329.62, 108,483.15 and 19,743.22

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Solution

The fourth proportional to 72,329.62, 108,483.15 and 19,743.22 is: 29,611.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,329.62 : 108,483.15 = 19,743.22 : x
  2. Step 2: Convert to fraction form
    72,329.62/108,483.15 = 19,743.22/x
  3. Step 3: Cross multiply
    72,329.62x = 108,483.15 × 19,743.22
  4. Step 4: Simplify right side
    72,329.62x = 2,141,806,696.74
  5. Step 5: Solve for x
    x = 2,141,806,696.74/72,329.62
  6. Step 6: Final answer
    x = 29,611.75

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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.