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Finding the Fourth Proportional to 61,250.90, 91,887.96 and 21,268.32

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Solution

The fourth proportional to 61,250.90, 91,887.96 and 21,268.32 is: 31,906.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,250.90 : 91,887.96 = 21,268.32 : x
  2. Step 2: Convert to fraction form
    61,250.90/91,887.96 = 21,268.32/x
  3. Step 3: Cross multiply
    61,250.90x = 91,887.96 × 21,268.32
  4. Step 4: Simplify right side
    61,250.90x = 1,954,302,961.76
  5. Step 5: Solve for x
    x = 1,954,302,961.76/61,250.90
  6. Step 6: Final answer
    x = 31,906.52

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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.