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Finding the Fourth Proportional to 85,408.80, 117,865.09 and 47,168.26

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Solution

The fourth proportional to 85,408.80, 117,865.09 and 47,168.26 is: 65,092.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,408.80 : 117,865.09 = 47,168.26 : x
  2. Step 2: Convert to fraction form
    85,408.80/117,865.09 = 47,168.26/x
  3. Step 3: Cross multiply
    85,408.80x = 117,865.09 × 47,168.26
  4. Step 4: Simplify right side
    85,408.80x = 5,559,490,974.34
  5. Step 5: Solve for x
    x = 5,559,490,974.34/85,408.80
  6. Step 6: Final answer
    x = 65,092.72

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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.