Home / 53,144.11-79,688.48-19,836.78

Finding the Fourth Proportional to 53,144.11, 79,688.48 and 19,836.78

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Solution

The fourth proportional to 53,144.11, 79,688.48 and 19,836.78 is: 29,744.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,144.11 : 79,688.48 = 19,836.78 : x
  2. Step 2: Convert to fraction form
    53,144.11/79,688.48 = 19,836.78/x
  3. Step 3: Cross multiply
    53,144.11x = 79,688.48 × 19,836.78
  4. Step 4: Simplify right side
    53,144.11x = 1,580,762,747.11
  5. Step 5: Solve for x
    x = 1,580,762,747.11/53,144.11
  6. Step 6: Final answer
    x = 29,744.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.