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Finding the Fourth Proportional to 85,651.93, 118,193.92 and 47,408.90

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Solution

The fourth proportional to 85,651.93, 118,193.92 and 47,408.90 is: 65,421.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,651.93 : 118,193.92 = 47,408.90 : x
  2. Step 2: Convert to fraction form
    85,651.93/118,193.92 = 47,408.90/x
  3. Step 3: Cross multiply
    85,651.93x = 118,193.92 × 47,408.90
  4. Step 4: Simplify right side
    85,651.93x = 5,603,443,024.40
  5. Step 5: Solve for x
    x = 5,603,443,024.40/85,651.93
  6. Step 6: Final answer
    x = 65,421.09

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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.