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Finding the Fourth Proportional to 61,311.40, 91,967.10 and 54,701.80

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Solution

The fourth proportional to 61,311.40, 91,967.10 and 54,701.80 is: 82,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,311.40 : 91,967.10 = 54,701.80 : x
  2. Step 2: Convert to fraction form
    61,311.40/91,967.10 = 54,701.80/x
  3. Step 3: Cross multiply
    61,311.40x = 91,967.10 × 54,701.80
  4. Step 4: Simplify right side
    61,311.40x = 5,030,765,910.78
  5. Step 5: Solve for x
    x = 5,030,765,910.78/61,311.40
  6. Step 6: Final answer
    x = 82,052.70

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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.