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Finding the Fourth Proportional to 81,877.88, 122,816.80 and 36,846.60

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Solution

The fourth proportional to 81,877.88, 122,816.80 and 36,846.60 is: 55,269.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,877.88 : 122,816.80 = 36,846.60 : x
  2. Step 2: Convert to fraction form
    81,877.88/122,816.80 = 36,846.60/x
  3. Step 3: Cross multiply
    81,877.88x = 122,816.80 × 36,846.60
  4. Step 4: Simplify right side
    81,877.88x = 4,525,381,502.88
  5. Step 5: Solve for x
    x = 4,525,381,502.88/81,877.88
  6. Step 6: Final answer
    x = 55,269.89

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1.5x scale

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.