Home / 80,965.37-121,418.90-34,221.89

Finding the Fourth Proportional to 80,965.37, 121,418.90 and 34,221.89

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Solution

The fourth proportional to 80,965.37, 121,418.90 and 34,221.89 is: 51,320.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,965.37 : 121,418.90 = 34,221.89 : x
  2. Step 2: Convert to fraction form
    80,965.37/121,418.90 = 34,221.89/x
  3. Step 3: Cross multiply
    80,965.37x = 121,418.90 × 34,221.89
  4. Step 4: Simplify right side
    80,965.37x = 4,155,184,500.49
  5. Step 5: Solve for x
    x = 4,155,184,500.49/80,965.37
  6. Step 6: Final answer
    x = 51,320.51

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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.