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Finding the Fourth Proportional to 79,892.80, 119,839.20 and 50,214.40

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Solution

The fourth proportional to 79,892.80, 119,839.20 and 50,214.40 is: 75,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,892.80 : 119,839.20 = 50,214.40 : x
  2. Step 2: Convert to fraction form
    79,892.80/119,839.20 = 50,214.40/x
  3. Step 3: Cross multiply
    79,892.80x = 119,839.20 × 50,214.40
  4. Step 4: Simplify right side
    79,892.80x = 6,017,653,524.48
  5. Step 5: Solve for x
    x = 6,017,653,524.48/79,892.80
  6. Step 6: Final answer
    x = 75,321.60

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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.