Home / 91,311.50-136,778.60-53,755.84

Finding the Fourth Proportional to 91,311.50, 136,778.60 and 53,755.84

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Solution

The fourth proportional to 91,311.50, 136,778.60 and 53,755.84 is: 80,522.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,311.50 : 136,778.60 = 53,755.84 : x
  2. Step 2: Convert to fraction form
    91,311.50/136,778.60 = 53,755.84/x
  3. Step 3: Cross multiply
    91,311.50x = 136,778.60 × 53,755.84
  4. Step 4: Simplify right side
    91,311.50x = 7,352,648,537.02
  5. Step 5: Solve for x
    x = 7,352,648,537.02/91,311.50
  6. Step 6: Final answer
    x = 80,522.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.