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Finding the Fourth Proportional to 61,215.40, 91,779.90 and 27,951.40

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Solution

The fourth proportional to 61,215.40, 91,779.90 and 27,951.40 is: 41,907.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,215.40 : 91,779.90 = 27,951.40 : x
  2. Step 2: Convert to fraction form
    61,215.40/91,779.90 = 27,951.40/x
  3. Step 3: Cross multiply
    61,215.40x = 91,779.90 × 27,951.40
  4. Step 4: Simplify right side
    61,215.40x = 2,565,376,696.86
  5. Step 5: Solve for x
    x = 2,565,376,696.86/61,215.40
  6. Step 6: Final answer
    x = 41,907.37

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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.