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Finding the Fourth Proportional to 80,005.59, 110,403.09 and 47,776.50

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Solution

The fourth proportional to 80,005.59, 110,403.09 and 47,776.50 is: 65,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,005.59 : 110,403.09 = 47,776.50 : x
  2. Step 2: Convert to fraction form
    80,005.59/110,403.09 = 47,776.50/x
  3. Step 3: Cross multiply
    80,005.59x = 110,403.09 × 47,776.50
  4. Step 4: Simplify right side
    80,005.59x = 5,274,673,229.39
  5. Step 5: Solve for x
    x = 5,274,673,229.39/80,005.59
  6. Step 6: Final answer
    x = 65,928.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.