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Finding the Fourth Proportional to 75,245.67, 103,839.03 and 40,790.52

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Solution

The fourth proportional to 75,245.67, 103,839.03 and 40,790.52 is: 56,290.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,245.67 : 103,839.03 = 40,790.52 : x
  2. Step 2: Convert to fraction form
    75,245.67/103,839.03 = 40,790.52/x
  3. Step 3: Cross multiply
    75,245.67x = 103,839.03 × 40,790.52
  4. Step 4: Simplify right side
    75,245.67x = 4,235,648,030.00
  5. Step 5: Solve for x
    x = 4,235,648,030.00/75,245.67
  6. Step 6: Final answer
    x = 56,290.92

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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.