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Finding the Fourth Proportional to 71,408.53, 106,474.38 and 69,446.77

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Solution

The fourth proportional to 71,408.53, 106,474.38 and 69,446.77 is: 103,549.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,408.53 : 106,474.38 = 69,446.77 : x
  2. Step 2: Convert to fraction form
    71,408.53/106,474.38 = 69,446.77/x
  3. Step 3: Cross multiply
    71,408.53x = 106,474.38 × 69,446.77
  4. Step 4: Simplify right side
    71,408.53x = 7,394,301,778.75
  5. Step 5: Solve for x
    x = 7,394,301,778.75/71,408.53
  6. Step 6: Final answer
    x = 103,549.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.