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Finding the Fourth Proportional to 71,474.48, 98,626.32 and 39,635.60

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Solution

The fourth proportional to 71,474.48, 98,626.32 and 39,635.60 is: 54,692.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,474.48 : 98,626.32 = 39,635.60 : x
  2. Step 2: Convert to fraction form
    71,474.48/98,626.32 = 39,635.60/x
  3. Step 3: Cross multiply
    71,474.48x = 98,626.32 × 39,635.60
  4. Step 4: Simplify right side
    71,474.48x = 3,909,113,368.99
  5. Step 5: Solve for x
    x = 3,909,113,368.99/71,474.48
  6. Step 6: Final answer
    x = 54,692.44

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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.