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Finding the Fourth Proportional to 89,239.86, 133,879.59 and 26,905.86

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Solution

The fourth proportional to 89,239.86, 133,879.59 and 26,905.86 is: 40,364.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,239.86 : 133,879.59 = 26,905.86 : x
  2. Step 2: Convert to fraction form
    89,239.86/133,879.59 = 26,905.86/x
  3. Step 3: Cross multiply
    89,239.86x = 133,879.59 × 26,905.86
  4. Step 4: Simplify right side
    89,239.86x = 3,602,145,505.40
  5. Step 5: Solve for x
    x = 3,602,145,505.40/89,239.86
  6. Step 6: Final answer
    x = 40,364.76

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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.