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Finding the Fourth Proportional to 81,493.60, 122,240.40 and 50,000.80

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Solution

The fourth proportional to 81,493.60, 122,240.40 and 50,000.80 is: 75,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,493.60 : 122,240.40 = 50,000.80 : x
  2. Step 2: Convert to fraction form
    81,493.60/122,240.40 = 50,000.80/x
  3. Step 3: Cross multiply
    81,493.60x = 122,240.40 × 50,000.80
  4. Step 4: Simplify right side
    81,493.60x = 6,112,117,792.32
  5. Step 5: Solve for x
    x = 6,112,117,792.32/81,493.60
  6. Step 6: Final answer
    x = 75,001.20

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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.