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Finding the Fourth Proportional to 80,436.78, 110,879.96 and 63,410.58

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Solution

The fourth proportional to 80,436.78, 110,879.96 and 63,410.58 is: 87,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,436.78 : 110,879.96 = 63,410.58 : x
  2. Step 2: Convert to fraction form
    80,436.78/110,879.96 = 63,410.58/x
  3. Step 3: Cross multiply
    80,436.78x = 110,879.96 × 63,410.58
  4. Step 4: Simplify right side
    80,436.78x = 7,030,962,573.98
  5. Step 5: Solve for x
    x = 7,030,962,573.98/80,436.78
  6. Step 6: Final answer
    x = 87,409.80

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1.5x scale

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.