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Finding the Fourth Proportional to 72,532.77, 108,748.13 and 28,122.09

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Solution

The fourth proportional to 72,532.77, 108,748.13 and 28,122.09 is: 42,163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,532.77 : 108,748.13 = 28,122.09 : x
  2. Step 2: Convert to fraction form
    72,532.77/108,748.13 = 28,122.09/x
  3. Step 3: Cross multiply
    72,532.77x = 108,748.13 × 28,122.09
  4. Step 4: Simplify right side
    72,532.77x = 3,058,224,558.58
  5. Step 5: Solve for x
    x = 3,058,224,558.58/72,532.77
  6. Step 6: Final answer
    x = 42,163.35

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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.