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Finding the Fourth Proportional to 80,051.76, 120,685.41 and 75,765.24

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Solution

The fourth proportional to 80,051.76, 120,685.41 and 75,765.24 is: 114,223.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,051.76 : 120,685.41 = 75,765.24 : x
  2. Step 2: Convert to fraction form
    80,051.76/120,685.41 = 75,765.24/x
  3. Step 3: Cross multiply
    80,051.76x = 120,685.41 × 75,765.24
  4. Step 4: Simplify right side
    80,051.76x = 9,143,759,053.15
  5. Step 5: Solve for x
    x = 9,143,759,053.15/80,051.76
  6. Step 6: Final answer
    x = 114,223.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.