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Finding the Fourth Proportional to 41,103.95, 61,655.72 and 9,939.20

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Solution

The fourth proportional to 41,103.95, 61,655.72 and 9,939.20 is: 14,908.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,103.95 : 61,655.72 = 9,939.20 : x
  2. Step 2: Convert to fraction form
    41,103.95/61,655.72 = 9,939.20/x
  3. Step 3: Cross multiply
    41,103.95x = 61,655.72 × 9,939.20
  4. Step 4: Simplify right side
    41,103.95x = 612,808,174.25
  5. Step 5: Solve for x
    x = 612,808,174.25/41,103.95
  6. Step 6: Final answer
    x = 14,908.74

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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.