Home / 57,125.64-78,842.72-39,205.92

Finding the Fourth Proportional to 57,125.64, 78,842.72 and 39,205.92

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Solution

The fourth proportional to 57,125.64, 78,842.72 and 39,205.92 is: 54,110.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,125.64 : 78,842.72 = 39,205.92 : x
  2. Step 2: Convert to fraction form
    57,125.64/78,842.72 = 39,205.92/x
  3. Step 3: Cross multiply
    57,125.64x = 78,842.72 × 39,205.92
  4. Step 4: Simplify right side
    57,125.64x = 3,091,101,372.90
  5. Step 5: Solve for x
    x = 3,091,101,372.90/57,125.64
  6. Step 6: Final answer
    x = 54,110.58

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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.