Home / 80,677.60-111,318.80-47,137.12

Finding the Fourth Proportional to 80,677.60, 111,318.80 and 47,137.12

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Solution

The fourth proportional to 80,677.60, 111,318.80 and 47,137.12 is: 65,039.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,677.60 : 111,318.80 = 47,137.12 : x
  2. Step 2: Convert to fraction form
    80,677.60/111,318.80 = 47,137.12/x
  3. Step 3: Cross multiply
    80,677.60x = 111,318.80 × 47,137.12
  4. Step 4: Simplify right side
    80,677.60x = 5,247,247,633.86
  5. Step 5: Solve for x
    x = 5,247,247,633.86/80,677.60
  6. Step 6: Final answer
    x = 65,039.71

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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.