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Finding the Fourth Proportional to 72,190.35, 108,300.98 and 21,593.35

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Solution

The fourth proportional to 72,190.35, 108,300.98 and 21,593.35 is: 32,394.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,190.35 : 108,300.98 = 21,593.35 : x
  2. Step 2: Convert to fraction form
    72,190.35/108,300.98 = 21,593.35/x
  3. Step 3: Cross multiply
    72,190.35x = 108,300.98 × 21,593.35
  4. Step 4: Simplify right side
    72,190.35x = 2,338,580,317.01
  5. Step 5: Solve for x
    x = 2,338,580,317.01/72,190.35
  6. Step 6: Final answer
    x = 32,394.64

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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.