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Finding the Fourth Proportional to 41,187, 61,779.88 and 13,108.74

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Solution

The fourth proportional to 41,187, 61,779.88 and 13,108.74 is: 19,662.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,187 : 61,779.88 = 13,108.74 : x
  2. Step 2: Convert to fraction form
    41,187/61,779.88 = 13,108.74/x
  3. Step 3: Cross multiply
    41,187x = 61,779.88 × 13,108.74
  4. Step 4: Simplify right side
    41,187x = 809,856,384.15
  5. Step 5: Solve for x
    x = 809,856,384.15/41,187
  6. Step 6: Final answer
    x = 19,662.91

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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.