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Finding the Fourth Proportional to 61,293.44, 91,887.48 and 21,307.19

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Solution

The fourth proportional to 61,293.44, 91,887.48 and 21,307.19 is: 31,942.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,293.44 : 91,887.48 = 21,307.19 : x
  2. Step 2: Convert to fraction form
    61,293.44/91,887.48 = 21,307.19/x
  3. Step 3: Cross multiply
    61,293.44x = 91,887.48 × 21,307.19
  4. Step 4: Simplify right side
    61,293.44x = 1,957,863,535.54
  5. Step 5: Solve for x
    x = 1,957,863,535.54/61,293.44
  6. Step 6: Final answer
    x = 31,942.46

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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.