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Finding the Fourth Proportional to 80,803.80, 121,205.55 and 36,378.64

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Solution

The fourth proportional to 80,803.80, 121,205.55 and 36,378.64 is: 54,567.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,803.80 : 121,205.55 = 36,378.64 : x
  2. Step 2: Convert to fraction form
    80,803.80/121,205.55 = 36,378.64/x
  3. Step 3: Cross multiply
    80,803.80x = 121,205.55 × 36,378.64
  4. Step 4: Simplify right side
    80,803.80x = 4,409,293,069.45
  5. Step 5: Solve for x
    x = 4,409,293,069.45/80,803.80
  6. Step 6: Final answer
    x = 54,567.89

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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.