Home / 57,212.07-78,924.59-49,647.78

Finding the Fourth Proportional to 57,212.07, 78,924.59 and 49,647.78

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Solution

The fourth proportional to 57,212.07, 78,924.59 and 49,647.78 is: 68,489.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,212.07 : 78,924.59 = 49,647.78 : x
  2. Step 2: Convert to fraction form
    57,212.07/78,924.59 = 49,647.78/x
  3. Step 3: Cross multiply
    57,212.07x = 78,924.59 × 49,647.78
  4. Step 4: Simplify right side
    57,212.07x = 3,918,430,680.91
  5. Step 5: Solve for x
    x = 3,918,430,680.91/57,212.07
  6. Step 6: Final answer
    x = 68,489.58

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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.