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Finding the Fourth Proportional to 101,261.80, 151,879.38 and 26,387.38

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Solution

The fourth proportional to 101,261.80, 151,879.38 and 26,387.38 is: 39,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,261.80 : 151,879.38 = 26,387.38 : x
  2. Step 2: Convert to fraction form
    101,261.80/151,879.38 = 26,387.38/x
  3. Step 3: Cross multiply
    101,261.80x = 151,879.38 × 26,387.38
  4. Step 4: Simplify right side
    101,261.80x = 4,007,698,914.22
  5. Step 5: Solve for x
    x = 4,007,698,914.22/101,261.80
  6. Step 6: Final answer
    x = 39,577.60

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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.