Home / 79,129.15-109,200.68-43,322.49

Finding the Fourth Proportional to 79,129.15, 109,200.68 and 43,322.49

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Solution

The fourth proportional to 79,129.15, 109,200.68 and 43,322.49 is: 59,786.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,129.15 : 109,200.68 = 43,322.49 : x
  2. Step 2: Convert to fraction form
    79,129.15/109,200.68 = 43,322.49/x
  3. Step 3: Cross multiply
    79,129.15x = 109,200.68 × 43,322.49
  4. Step 4: Simplify right side
    79,129.15x = 4,730,845,475.60
  5. Step 5: Solve for x
    x = 4,730,845,475.60/79,129.15
  6. Step 6: Final answer
    x = 59,786.38

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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.