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Finding the Fourth Proportional to 63,108.99, 87,040.98 and 40,450.05

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Solution

The fourth proportional to 63,108.99, 87,040.98 and 40,450.05 is: 55,789.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,108.99 : 87,040.98 = 40,450.05 : x
  2. Step 2: Convert to fraction form
    63,108.99/87,040.98 = 40,450.05/x
  3. Step 3: Cross multiply
    63,108.99x = 87,040.98 × 40,450.05
  4. Step 4: Simplify right side
    63,108.99x = 3,520,811,993.05
  5. Step 5: Solve for x
    x = 3,520,811,993.05/63,108.99
  6. Step 6: Final answer
    x = 55,789.39

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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.