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Finding the Fourth Proportional to 61,133.98, 91,714.74 and 21,691.03

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Solution

The fourth proportional to 61,133.98, 91,714.74 and 21,691.03 is: 32,541.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,133.98 : 91,714.74 = 21,691.03 : x
  2. Step 2: Convert to fraction form
    61,133.98/91,714.74 = 21,691.03/x
  3. Step 3: Cross multiply
    61,133.98x = 91,714.74 × 21,691.03
  4. Step 4: Simplify right side
    61,133.98x = 1,989,387,176.78
  5. Step 5: Solve for x
    x = 1,989,387,176.78/61,133.98
  6. Step 6: Final answer
    x = 32,541.43

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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.