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Finding the Fourth Proportional to 127,755.52, 191,661.32 and 37,791.20

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Solution

The fourth proportional to 127,755.52, 191,661.32 and 37,791.20 is: 56,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,755.52 : 191,661.32 = 37,791.20 : x
  2. Step 2: Convert to fraction form
    127,755.52/191,661.32 = 37,791.20/x
  3. Step 3: Cross multiply
    127,755.52x = 191,661.32 × 37,791.20
  4. Step 4: Simplify right side
    127,755.52x = 7,243,111,850.02
  5. Step 5: Solve for x
    x = 7,243,111,850.02/127,755.52
  6. Step 6: Final answer
    x = 56,695.10

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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.