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Finding the Fourth Proportional to 73,220.07, 109,704.71 and 39,963.47

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Solution

The fourth proportional to 73,220.07, 109,704.71 and 39,963.47 is: 59,876.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,220.07 : 109,704.71 = 39,963.47 : x
  2. Step 2: Convert to fraction form
    73,220.07/109,704.71 = 39,963.47/x
  3. Step 3: Cross multiply
    73,220.07x = 109,704.71 × 39,963.47
  4. Step 4: Simplify right side
    73,220.07x = 4,384,181,261.11
  5. Step 5: Solve for x
    x = 4,384,181,261.11/73,220.07
  6. Step 6: Final answer
    x = 59,876.77

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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.