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Finding the Fourth Proportional to 43,662.92, 65,494.38 and 18,686.78

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Solution

The fourth proportional to 43,662.92, 65,494.38 and 18,686.78 is: 28,030.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,662.92 : 65,494.38 = 18,686.78 : x
  2. Step 2: Convert to fraction form
    43,662.92/65,494.38 = 18,686.78/x
  3. Step 3: Cross multiply
    43,662.92x = 65,494.38 × 18,686.78
  4. Step 4: Simplify right side
    43,662.92x = 1,223,879,070.30
  5. Step 5: Solve for x
    x = 1,223,879,070.30/43,662.92
  6. Step 6: Final answer
    x = 28,030.17

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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.