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Finding the Fourth Proportional to 79,090.70, 109,147.90 and 45,104.30

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Solution

The fourth proportional to 79,090.70, 109,147.90 and 45,104.30 is: 62,245.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,090.70 : 109,147.90 = 45,104.30 : x
  2. Step 2: Convert to fraction form
    79,090.70/109,147.90 = 45,104.30/x
  3. Step 3: Cross multiply
    79,090.70x = 109,147.90 × 45,104.30
  4. Step 4: Simplify right side
    79,090.70x = 4,923,039,625.97
  5. Step 5: Solve for x
    x = 4,923,039,625.97/79,090.70
  6. Step 6: Final answer
    x = 62,245.49

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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.