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Finding the Fourth Proportional to 61,879.96, 85,389.54 and 36,387.32

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Solution

The fourth proportional to 61,879.96, 85,389.54 and 36,387.32 is: 50,211.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,879.96 : 85,389.54 = 36,387.32 : x
  2. Step 2: Convert to fraction form
    61,879.96/85,389.54 = 36,387.32/x
  3. Step 3: Cross multiply
    61,879.96x = 85,389.54 × 36,387.32
  4. Step 4: Simplify right side
    61,879.96x = 3,107,096,516.63
  5. Step 5: Solve for x
    x = 3,107,096,516.63/61,879.96
  6. Step 6: Final answer
    x = 50,211.68

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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.