Home / 79,129.39-109,201.02-43,322.74

Finding the Fourth Proportional to 79,129.39, 109,201.02 and 43,322.74

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Solution

The fourth proportional to 79,129.39, 109,201.02 and 43,322.74 is: 59,786.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,129.39 : 109,201.02 = 43,322.74 : x
  2. Step 2: Convert to fraction form
    79,129.39/109,201.02 = 43,322.74/x
  3. Step 3: Cross multiply
    79,129.39x = 109,201.02 × 43,322.74
  4. Step 4: Simplify right side
    79,129.39x = 4,730,887,397.19
  5. Step 5: Solve for x
    x = 4,730,887,397.19/79,129.39
  6. Step 6: Final answer
    x = 59,786.73

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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.