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Finding the Fourth Proportional to 61,681.21, 85,121.64 and 37,821.04

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Solution

The fourth proportional to 61,681.21, 85,121.64 and 37,821.04 is: 52,194.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,681.21 : 85,121.64 = 37,821.04 : x
  2. Step 2: Convert to fraction form
    61,681.21/85,121.64 = 37,821.04/x
  3. Step 3: Cross multiply
    61,681.21x = 85,121.64 × 37,821.04
  4. Step 4: Simplify right side
    61,681.21x = 3,219,388,951.31
  5. Step 5: Solve for x
    x = 3,219,388,951.31/61,681.21
  6. Step 6: Final answer
    x = 52,194.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.