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Finding the Fourth Proportional to 72,224.46, 108,351.27 and 42,663.51

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Solution

The fourth proportional to 72,224.46, 108,351.27 and 42,663.51 is: 64,003.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,224.46 : 108,351.27 = 42,663.51 : x
  2. Step 2: Convert to fraction form
    72,224.46/108,351.27 = 42,663.51/x
  3. Step 3: Cross multiply
    72,224.46x = 108,351.27 × 42,663.51
  4. Step 4: Simplify right side
    72,224.46x = 4,622,645,491.16
  5. Step 5: Solve for x
    x = 4,622,645,491.16/72,224.46
  6. Step 6: Final answer
    x = 64,003.88

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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.