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Finding the Fourth Proportional to 40,879, 61,298.44 and 18,396.64

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Solution

The fourth proportional to 40,879, 61,298.44 and 18,396.64 is: 27,585.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,879 : 61,298.44 = 18,396.64 : x
  2. Step 2: Convert to fraction form
    40,879/61,298.44 = 18,396.64/x
  3. Step 3: Cross multiply
    40,879x = 61,298.44 × 18,396.64
  4. Step 4: Simplify right side
    40,879x = 1,127,685,333.24
  5. Step 5: Solve for x
    x = 1,127,685,333.24/40,879
  6. Step 6: Final answer
    x = 27,585.93

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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.