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Finding the Fourth Proportional to 80,602.85, 111,157.57 and 50,378.51

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Solution

The fourth proportional to 80,602.85, 111,157.57 and 50,378.51 is: 69,475.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,602.85 : 111,157.57 = 50,378.51 : x
  2. Step 2: Convert to fraction form
    80,602.85/111,157.57 = 50,378.51/x
  3. Step 3: Cross multiply
    80,602.85x = 111,157.57 × 50,378.51
  4. Step 4: Simplify right side
    80,602.85x = 5,599,952,751.82
  5. Step 5: Solve for x
    x = 5,599,952,751.82/80,602.85
  6. Step 6: Final answer
    x = 69,475.87

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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.