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Finding the Fourth Proportional to 72,273.35, 108,406.68 and 18,964.01

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Solution

The fourth proportional to 72,273.35, 108,406.68 and 18,964.01 is: 28,445.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,273.35 : 108,406.68 = 18,964.01 : x
  2. Step 2: Convert to fraction form
    72,273.35/108,406.68 = 18,964.01/x
  3. Step 3: Cross multiply
    72,273.35x = 108,406.68 × 18,964.01
  4. Step 4: Simplify right side
    72,273.35x = 2,055,824,726.73
  5. Step 5: Solve for x
    x = 2,055,824,726.73/72,273.35
  6. Step 6: Final answer
    x = 28,445.13

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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.