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Finding the Fourth Proportional to 74,149.50, 102,326.67 and 40,615.50

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Solution

The fourth proportional to 74,149.50, 102,326.67 and 40,615.50 is: 56,049.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,149.50 : 102,326.67 = 40,615.50 : x
  2. Step 2: Convert to fraction form
    74,149.50/102,326.67 = 40,615.50/x
  3. Step 3: Cross multiply
    74,149.50x = 102,326.67 × 40,615.50
  4. Step 4: Simplify right side
    74,149.50x = 4,156,048,865.39
  5. Step 5: Solve for x
    x = 4,156,048,865.39/74,149.50
  6. Step 6: Final answer
    x = 56,049.59

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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.