Home / 81,972.10-113,126.32-50,147.10

Finding the Fourth Proportional to 81,972.10, 113,126.32 and 50,147.10

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Solution

The fourth proportional to 81,972.10, 113,126.32 and 50,147.10 is: 69,205.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,972.10 : 113,126.32 = 50,147.10 : x
  2. Step 2: Convert to fraction form
    81,972.10/113,126.32 = 50,147.10/x
  3. Step 3: Cross multiply
    81,972.10x = 113,126.32 × 50,147.10
  4. Step 4: Simplify right side
    81,972.10x = 5,672,956,944.36
  5. Step 5: Solve for x
    x = 5,672,956,944.36/81,972.10
  6. Step 6: Final answer
    x = 69,205.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.