Home / 81,731.54-112,863.30-51,570.38

Finding the Fourth Proportional to 81,731.54, 112,863.30 and 51,570.38

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Solution

The fourth proportional to 81,731.54, 112,863.30 and 51,570.38 is: 71,213.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,731.54 : 112,863.30 = 51,570.38 : x
  2. Step 2: Convert to fraction form
    81,731.54/112,863.30 = 51,570.38/x
  3. Step 3: Cross multiply
    81,731.54x = 112,863.30 × 51,570.38
  4. Step 4: Simplify right side
    81,731.54x = 5,820,403,269.05
  5. Step 5: Solve for x
    x = 5,820,403,269.05/81,731.54
  6. Step 6: Final answer
    x = 71,213.67

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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.