Home / 81,964.31-113,114.48-49,699.85

Finding the Fourth Proportional to 81,964.31, 113,114.48 and 49,699.85

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Solution

The fourth proportional to 81,964.31, 113,114.48 and 49,699.85 is: 68,588.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,964.31 : 113,114.48 = 49,699.85 : x
  2. Step 2: Convert to fraction form
    81,964.31/113,114.48 = 49,699.85/x
  3. Step 3: Cross multiply
    81,964.31x = 113,114.48 × 49,699.85
  4. Step 4: Simplify right side
    81,964.31x = 5,621,771,874.76
  5. Step 5: Solve for x
    x = 5,621,771,874.76/81,964.31
  6. Step 6: Final answer
    x = 68,588.05

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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.