Home / 80,664.20-120,938.70-45,614.60

Finding the Fourth Proportional to 80,664.20, 120,938.70 and 45,614.60

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Solution

The fourth proportional to 80,664.20, 120,938.70 and 45,614.60 is: 68,389.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,664.20 : 120,938.70 = 45,614.60 : x
  2. Step 2: Convert to fraction form
    80,664.20/120,938.70 = 45,614.60/x
  3. Step 3: Cross multiply
    80,664.20x = 120,938.70 × 45,614.60
  4. Step 4: Simplify right side
    80,664.20x = 5,516,570,425.02
  5. Step 5: Solve for x
    x = 5,516,570,425.02/80,664.20
  6. Step 6: Final answer
    x = 68,389.33

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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.