Home / 80,666.20-120,941.70-45,616.60

Finding the Fourth Proportional to 80,666.20, 120,941.70 and 45,616.60

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Solution

The fourth proportional to 80,666.20, 120,941.70 and 45,616.60 is: 68,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,666.20 : 120,941.70 = 45,616.60 : x
  2. Step 2: Convert to fraction form
    80,666.20/120,941.70 = 45,616.60/x
  3. Step 3: Cross multiply
    80,666.20x = 120,941.70 × 45,616.60
  4. Step 4: Simplify right side
    80,666.20x = 5,516,949,152.22
  5. Step 5: Solve for x
    x = 5,516,949,152.22/80,666.20
  6. Step 6: Final answer
    x = 68,392.33

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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.