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Finding the Fourth Proportional to 53,120.88, 79,692.12 and 21,956.13

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Solution

The fourth proportional to 53,120.88, 79,692.12 and 21,956.13 is: 32,938.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,120.88 : 79,692.12 = 21,956.13 : x
  2. Step 2: Convert to fraction form
    53,120.88/79,692.12 = 21,956.13/x
  3. Step 3: Cross multiply
    53,120.88x = 79,692.12 × 21,956.13
  4. Step 4: Simplify right side
    53,120.88x = 1,749,730,546.70
  5. Step 5: Solve for x
    x = 1,749,730,546.70/53,120.88
  6. Step 6: Final answer
    x = 32,938.66

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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.