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Finding the Fourth Proportional to 72,244.54, 108,388.63 and 21,645.22

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Solution

The fourth proportional to 72,244.54, 108,388.63 and 21,645.22 is: 32,474.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,244.54 : 108,388.63 = 21,645.22 : x
  2. Step 2: Convert to fraction form
    72,244.54/108,388.63 = 21,645.22/x
  3. Step 3: Cross multiply
    72,244.54x = 108,388.63 × 21,645.22
  4. Step 4: Simplify right side
    72,244.54x = 2,346,095,741.85
  5. Step 5: Solve for x
    x = 2,346,095,741.85/72,244.54
  6. Step 6: Final answer
    x = 32,474.37

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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.