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Finding the Fourth Proportional to 72,641.01, 100,252.73 and 43,976.47

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Solution

The fourth proportional to 72,641.01, 100,252.73 and 43,976.47 is: 60,692.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,641.01 : 100,252.73 = 43,976.47 : x
  2. Step 2: Convert to fraction form
    72,641.01/100,252.73 = 43,976.47/x
  3. Step 3: Cross multiply
    72,641.01x = 100,252.73 × 43,976.47
  4. Step 4: Simplify right side
    72,641.01x = 4,408,761,173.26
  5. Step 5: Solve for x
    x = 4,408,761,173.26/72,641.01
  6. Step 6: Final answer
    x = 60,692.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.