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Finding the Fourth Proportional to 80,379.76, 110,918.64 and 46,389.66

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Solution

The fourth proportional to 80,379.76, 110,918.64 and 46,389.66 is: 64,014.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,379.76 : 110,918.64 = 46,389.66 : x
  2. Step 2: Convert to fraction form
    80,379.76/110,918.64 = 46,389.66/x
  3. Step 3: Cross multiply
    80,379.76x = 110,918.64 × 46,389.66
  4. Step 4: Simplify right side
    80,379.76x = 5,145,477,997.26
  5. Step 5: Solve for x
    x = 5,145,477,997.26/80,379.76
  6. Step 6: Final answer
    x = 64,014.60

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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.