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Finding the Fourth Proportional to 71,956.44, 99,300.53 and 39,692.30

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Solution

The fourth proportional to 71,956.44, 99,300.53 and 39,692.30 is: 54,775.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,956.44 : 99,300.53 = 39,692.30 : x
  2. Step 2: Convert to fraction form
    71,956.44/99,300.53 = 39,692.30/x
  3. Step 3: Cross multiply
    71,956.44x = 99,300.53 × 39,692.30
  4. Step 4: Simplify right side
    71,956.44x = 3,941,466,029.65
  5. Step 5: Solve for x
    x = 3,941,466,029.65/71,956.44
  6. Step 6: Final answer
    x = 54,775.72

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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.