Home / 80,277.78-120,491.39-40,864.40

Finding the Fourth Proportional to 80,277.78, 120,491.39 and 40,864.40

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Solution

The fourth proportional to 80,277.78, 120,491.39 and 40,864.40 is: 61,334.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,277.78 : 120,491.39 = 40,864.40 : x
  2. Step 2: Convert to fraction form
    80,277.78/120,491.39 = 40,864.40/x
  3. Step 3: Cross multiply
    80,277.78x = 120,491.39 × 40,864.40
  4. Step 4: Simplify right side
    80,277.78x = 4,923,807,755.06
  5. Step 5: Solve for x
    x = 4,923,807,755.06/80,277.78
  6. Step 6: Final answer
    x = 61,334.63

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1.5x scale

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.