Home / 57,345.12-79,107.76-49,781.36

Finding the Fourth Proportional to 57,345.12, 79,107.76 and 49,781.36

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Solution

The fourth proportional to 57,345.12, 79,107.76 and 49,781.36 is: 68,673.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,345.12 : 79,107.76 = 49,781.36 : x
  2. Step 2: Convert to fraction form
    57,345.12/79,107.76 = 49,781.36/x
  3. Step 3: Cross multiply
    57,345.12x = 79,107.76 × 49,781.36
  4. Step 4: Simplify right side
    57,345.12x = 3,938,091,879.35
  5. Step 5: Solve for x
    x = 3,938,091,879.35/57,345.12
  6. Step 6: Final answer
    x = 68,673.53

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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.