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Finding the Fourth Proportional to 61,085.64, 91,656 and 38,893.26

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Solution

The fourth proportional to 61,085.64, 91,656 and 38,893.26 is: 58,357.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,085.64 : 91,656 = 38,893.26 : x
  2. Step 2: Convert to fraction form
    61,085.64/91,656 = 38,893.26/x
  3. Step 3: Cross multiply
    61,085.64x = 91,656 × 38,893.26
  4. Step 4: Simplify right side
    61,085.64x = 3,564,800,638.56
  5. Step 5: Solve for x
    x = 3,564,800,638.56/61,085.64
  6. Step 6: Final answer
    x = 58,357.42

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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.