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Finding the Fourth Proportional to 61,254.26, 91,894.47 and 21,274.49

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Solution

The fourth proportional to 61,254.26, 91,894.47 and 21,274.49 is: 31,916.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,254.26 : 91,894.47 = 21,274.49 : x
  2. Step 2: Convert to fraction form
    61,254.26/91,894.47 = 21,274.49/x
  3. Step 3: Cross multiply
    61,254.26x = 91,894.47 × 21,274.49
  4. Step 4: Simplify right side
    61,254.26x = 1,955,007,523.60
  5. Step 5: Solve for x
    x = 1,955,007,523.60/61,254.26
  6. Step 6: Final answer
    x = 31,916.27

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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.