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Finding the Fourth Proportional to 84,333.68, 126,412.38 and 39,907.52

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Solution

The fourth proportional to 84,333.68, 126,412.38 and 39,907.52 is: 59,819.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,333.68 : 126,412.38 = 39,907.52 : x
  2. Step 2: Convert to fraction form
    84,333.68/126,412.38 = 39,907.52/x
  3. Step 3: Cross multiply
    84,333.68x = 126,412.38 × 39,907.52
  4. Step 4: Simplify right side
    84,333.68x = 5,044,804,583.10
  5. Step 5: Solve for x
    x = 5,044,804,583.10/84,333.68
  6. Step 6: Final answer
    x = 59,819.57

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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.