Home / 53,135.78-79,711.56-33,128.98

Finding the Fourth Proportional to 53,135.78, 79,711.56 and 33,128.98

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Solution

The fourth proportional to 53,135.78, 79,711.56 and 33,128.98 is: 49,698.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,135.78 : 79,711.56 = 33,128.98 : x
  2. Step 2: Convert to fraction form
    53,135.78/79,711.56 = 33,128.98/x
  3. Step 3: Cross multiply
    53,135.78x = 79,711.56 × 33,128.98
  4. Step 4: Simplify right side
    53,135.78x = 2,640,762,677.01
  5. Step 5: Solve for x
    x = 2,640,762,677.01/53,135.78
  6. Step 6: Final answer
    x = 49,698.39

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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.