Home / 79,128.23-109,198.88-43,318.13

Finding the Fourth Proportional to 79,128.23, 109,198.88 and 43,318.13

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Solution

The fourth proportional to 79,128.23, 109,198.88 and 43,318.13 is: 59,780.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,128.23 : 109,198.88 = 43,318.13 : x
  2. Step 2: Convert to fraction form
    79,128.23/109,198.88 = 43,318.13/x
  3. Step 3: Cross multiply
    79,128.23x = 109,198.88 × 43,318.13
  4. Step 4: Simplify right side
    79,128.23x = 4,730,291,089.05
  5. Step 5: Solve for x
    x = 4,730,291,089.05/79,128.23
  6. Step 6: Final answer
    x = 59,780.07

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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.