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Finding the Fourth Proportional to 41,220, 61,779.32 and 19,002.56

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Solution

The fourth proportional to 41,220, 61,779.32 and 19,002.56 is: 28,480.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,220 : 61,779.32 = 19,002.56 : x
  2. Step 2: Convert to fraction form
    41,220/61,779.32 = 19,002.56/x
  3. Step 3: Cross multiply
    41,220x = 61,779.32 × 19,002.56
  4. Step 4: Simplify right side
    41,220x = 1,173,965,235.06
  5. Step 5: Solve for x
    x = 1,173,965,235.06/41,220
  6. Step 6: Final answer
    x = 28,480.48

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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.