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Finding the Fourth Proportional to 79,099.60, 109,157.49 and 43,289.59

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Solution

The fourth proportional to 79,099.60, 109,157.49 and 43,289.59 is: 59,739.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,099.60 : 109,157.49 = 43,289.59 : x
  2. Step 2: Convert to fraction form
    79,099.60/109,157.49 = 43,289.59/x
  3. Step 3: Cross multiply
    79,099.60x = 109,157.49 × 43,289.59
  4. Step 4: Simplify right side
    79,099.60x = 4,725,382,987.53
  5. Step 5: Solve for x
    x = 4,725,382,987.53/79,099.60
  6. Step 6: Final answer
    x = 59,739.66

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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.