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Finding the Fourth Proportional to 79,157.40, 109,249.56 and 45,165.84

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Solution

The fourth proportional to 79,157.40, 109,249.56 and 45,165.84 is: 62,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,157.40 : 109,249.56 = 45,165.84 : x
  2. Step 2: Convert to fraction form
    79,157.40/109,249.56 = 45,165.84/x
  3. Step 3: Cross multiply
    79,157.40x = 109,249.56 × 45,165.84
  4. Step 4: Simplify right side
    79,157.40x = 4,934,348,147.03
  5. Step 5: Solve for x
    x = 4,934,348,147.03/79,157.40
  6. Step 6: Final answer
    x = 62,335.90

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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.