Home / 82,172.20-113,394.69-51,561.78

Finding the Fourth Proportional to 82,172.20, 113,394.69 and 51,561.78

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Solution

The fourth proportional to 82,172.20, 113,394.69 and 51,561.78 is: 71,153.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,172.20 : 113,394.69 = 51,561.78 : x
  2. Step 2: Convert to fraction form
    82,172.20/113,394.69 = 51,561.78/x
  3. Step 3: Cross multiply
    82,172.20x = 113,394.69 × 51,561.78
  4. Step 4: Simplify right side
    82,172.20x = 5,846,832,281.98
  5. Step 5: Solve for x
    x = 5,846,832,281.98/82,172.20
  6. Step 6: Final answer
    x = 71,153.41

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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.