Home / 79,276.64-109,405.20-47,439.44

Finding the Fourth Proportional to 79,276.64, 109,405.20 and 47,439.44

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Solution

The fourth proportional to 79,276.64, 109,405.20 and 47,439.44 is: 65,468.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,276.64 : 109,405.20 = 47,439.44 : x
  2. Step 2: Convert to fraction form
    79,276.64/109,405.20 = 47,439.44/x
  3. Step 3: Cross multiply
    79,276.64x = 109,405.20 × 47,439.44
  4. Step 4: Simplify right side
    79,276.64x = 5,190,121,421.09
  5. Step 5: Solve for x
    x = 5,190,121,421.09/79,276.64
  6. Step 6: Final answer
    x = 65,468.48

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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.