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Finding the Fourth Proportional to 40,692.24, 61,061.04 and 21,971.88

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Solution

The fourth proportional to 40,692.24, 61,061.04 and 21,971.88 is: 32,970.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,692.24 : 61,061.04 = 21,971.88 : x
  2. Step 2: Convert to fraction form
    40,692.24/61,061.04 = 21,971.88/x
  3. Step 3: Cross multiply
    40,692.24x = 61,061.04 × 21,971.88
  4. Step 4: Simplify right side
    40,692.24x = 1,341,625,843.56
  5. Step 5: Solve for x
    x = 1,341,625,843.56/40,692.24
  6. Step 6: Final answer
    x = 32,970.07

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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.