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Finding the Fourth Proportional to 85,893.55, 118,532.90 and 47,658.92

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Solution

The fourth proportional to 85,893.55, 118,532.90 and 47,658.92 is: 65,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,893.55 : 118,532.90 = 47,658.92 : x
  2. Step 2: Convert to fraction form
    85,893.55/118,532.90 = 47,658.92/x
  3. Step 3: Cross multiply
    85,893.55x = 118,532.90 × 47,658.92
  4. Step 4: Simplify right side
    85,893.55x = 5,649,149,524.95
  5. Step 5: Solve for x
    x = 5,649,149,524.95/85,893.55
  6. Step 6: Final answer
    x = 65,769.20

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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.