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Finding the Fourth Proportional to 74,072.76, 111,063.78 and 39,028.92

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Solution

The fourth proportional to 74,072.76, 111,063.78 and 39,028.92 is: 58,519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,072.76 : 111,063.78 = 39,028.92 : x
  2. Step 2: Convert to fraction form
    74,072.76/111,063.78 = 39,028.92/x
  3. Step 3: Cross multiply
    74,072.76x = 111,063.78 × 39,028.92
  4. Step 4: Simplify right side
    74,072.76x = 4,334,699,384.52
  5. Step 5: Solve for x
    x = 4,334,699,384.52/74,072.76
  6. Step 6: Final answer
    x = 58,519.48

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1.5x scale

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.