Home / 80,917.10-121,332.45-34,117.10

Finding the Fourth Proportional to 80,917.10, 121,332.45 and 34,117.10

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Solution

The fourth proportional to 80,917.10, 121,332.45 and 34,117.10 is: 51,157.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,917.10 : 121,332.45 = 34,117.10 : x
  2. Step 2: Convert to fraction form
    80,917.10/121,332.45 = 34,117.10/x
  3. Step 3: Cross multiply
    80,917.10x = 121,332.45 × 34,117.10
  4. Step 4: Simplify right side
    80,917.10x = 4,139,511,329.90
  5. Step 5: Solve for x
    x = 4,139,511,329.90/80,917.10
  6. Step 6: Final answer
    x = 51,157.44

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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.