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Finding the Fourth Proportional to 80,513.80, 120,770.70 and 50,835.40

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Solution

The fourth proportional to 80,513.80, 120,770.70 and 50,835.40 is: 76,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,513.80 : 120,770.70 = 50,835.40 : x
  2. Step 2: Convert to fraction form
    80,513.80/120,770.70 = 50,835.40/x
  3. Step 3: Cross multiply
    80,513.80x = 120,770.70 × 50,835.40
  4. Step 4: Simplify right side
    80,513.80x = 6,139,426,842.78
  5. Step 5: Solve for x
    x = 6,139,426,842.78/80,513.80
  6. Step 6: Final answer
    x = 76,253.10

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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.