Home / 57,039.31-78,735.09-34,379.11

Finding the Fourth Proportional to 57,039.31, 78,735.09 and 34,379.11

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Solution

The fourth proportional to 57,039.31, 78,735.09 and 34,379.11 is: 47,455.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,039.31 : 78,735.09 = 34,379.11 : x
  2. Step 2: Convert to fraction form
    57,039.31/78,735.09 = 34,379.11/x
  3. Step 3: Cross multiply
    57,039.31x = 78,735.09 × 34,379.11
  4. Step 4: Simplify right side
    57,039.31x = 2,706,842,319.97
  5. Step 5: Solve for x
    x = 2,706,842,319.97/57,039.31
  6. Step 6: Final answer
    x = 47,455.73

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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.