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Finding the Fourth Proportional to 80,706.44, 120,907.02 and 45,671.24

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Solution

The fourth proportional to 80,706.44, 120,907.02 and 45,671.24 is: 68,420.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,706.44 : 120,907.02 = 45,671.24 : x
  2. Step 2: Convert to fraction form
    80,706.44/120,907.02 = 45,671.24/x
  3. Step 3: Cross multiply
    80,706.44x = 120,907.02 × 45,671.24
  4. Step 4: Simplify right side
    80,706.44x = 5,521,973,528.10
  5. Step 5: Solve for x
    x = 5,521,973,528.10/80,706.44
  6. Step 6: Final answer
    x = 68,420.48

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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.