Home / 51,181.67-76,815.64-21,620.72

Finding the Fourth Proportional to 51,181.67, 76,815.64 and 21,620.72

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Solution

The fourth proportional to 51,181.67, 76,815.64 and 21,620.72 is: 32,449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,181.67 : 76,815.64 = 21,620.72 : x
  2. Step 2: Convert to fraction form
    51,181.67/76,815.64 = 21,620.72/x
  3. Step 3: Cross multiply
    51,181.67x = 76,815.64 × 21,620.72
  4. Step 4: Simplify right side
    51,181.67x = 1,660,809,444.06
  5. Step 5: Solve for x
    x = 1,660,809,444.06/51,181.67
  6. Step 6: Final answer
    x = 32,449.30

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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.