Home / 80,935.85-121,438.80-43,452.20

Finding the Fourth Proportional to 80,935.85, 121,438.80 and 43,452.20

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Solution

The fourth proportional to 80,935.85, 121,438.80 and 43,452.20 is: 65,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,935.85 : 121,438.80 = 43,452.20 : x
  2. Step 2: Convert to fraction form
    80,935.85/121,438.80 = 43,452.20/x
  3. Step 3: Cross multiply
    80,935.85x = 121,438.80 × 43,452.20
  4. Step 4: Simplify right side
    80,935.85x = 5,276,783,025.36
  5. Step 5: Solve for x
    x = 5,276,783,025.36/80,935.85
  6. Step 6: Final answer
    x = 65,197.10

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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.