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Finding the Fourth Proportional to 71,524.34, 98,701.70 and 39,692.42

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Solution

The fourth proportional to 71,524.34, 98,701.70 and 39,692.42 is: 54,774.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,524.34 : 98,701.70 = 39,692.42 : x
  2. Step 2: Convert to fraction form
    71,524.34/98,701.70 = 39,692.42/x
  3. Step 3: Cross multiply
    71,524.34x = 98,701.70 × 39,692.42
  4. Step 4: Simplify right side
    71,524.34x = 3,917,709,331.11
  5. Step 5: Solve for x
    x = 3,917,709,331.11/71,524.34
  6. Step 6: Final answer
    x = 54,774.49

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1.5x scale

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.