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Finding the Fourth Proportional to 79,990.98, 120,008.37 and 35,004.18

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Solution

The fourth proportional to 79,990.98, 120,008.37 and 35,004.18 is: 52,515.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,990.98 : 120,008.37 = 35,004.18 : x
  2. Step 2: Convert to fraction form
    79,990.98/120,008.37 = 35,004.18/x
  3. Step 3: Cross multiply
    79,990.98x = 120,008.37 × 35,004.18
  4. Step 4: Simplify right side
    79,990.98x = 4,200,794,584.99
  5. Step 5: Solve for x
    x = 4,200,794,584.99/79,990.98
  6. Step 6: Final answer
    x = 52,515.85

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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.