Home / 80,739.50-121,121.55-41,283.29

Finding the Fourth Proportional to 80,739.50, 121,121.55 and 41,283.29

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Solution

The fourth proportional to 80,739.50, 121,121.55 and 41,283.29 is: 61,931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,739.50 : 121,121.55 = 41,283.29 : x
  2. Step 2: Convert to fraction form
    80,739.50/121,121.55 = 41,283.29/x
  3. Step 3: Cross multiply
    80,739.50x = 121,121.55 × 41,283.29
  4. Step 4: Simplify right side
    80,739.50x = 5,000,295,771.10
  5. Step 5: Solve for x
    x = 5,000,295,771.10/80,739.50
  6. Step 6: Final answer
    x = 61,931.22

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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.