Home / 80,331.84-120,572.51-40,918.46

Finding the Fourth Proportional to 80,331.84, 120,572.51 and 40,918.46

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Solution

The fourth proportional to 80,331.84, 120,572.51 and 40,918.46 is: 61,415.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,331.84 : 120,572.51 = 40,918.46 : x
  2. Step 2: Convert to fraction form
    80,331.84/120,572.51 = 40,918.46/x
  3. Step 3: Cross multiply
    80,331.84x = 120,572.51 × 40,918.46
  4. Step 4: Simplify right side
    80,331.84x = 4,933,640,620.08
  5. Step 5: Solve for x
    x = 4,933,640,620.08/80,331.84
  6. Step 6: Final answer
    x = 61,415.76

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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.