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Finding the Fourth Proportional to 80,511.84, 120,816.90 and 50,888.88

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Solution

The fourth proportional to 80,511.84, 120,816.90 and 50,888.88 is: 76,364.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,511.84 : 120,816.90 = 50,888.88 : x
  2. Step 2: Convert to fraction form
    80,511.84/120,816.90 = 50,888.88/x
  3. Step 3: Cross multiply
    80,511.84x = 120,816.90 × 50,888.88
  4. Step 4: Simplify right side
    80,511.84x = 6,148,236,726.07
  5. Step 5: Solve for x
    x = 6,148,236,726.07/80,511.84
  6. Step 6: Final answer
    x = 76,364.38

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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.