Home / 79,088.48-109,142.09-43,278.49

Finding the Fourth Proportional to 79,088.48, 109,142.09 and 43,278.49

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Solution

The fourth proportional to 79,088.48, 109,142.09 and 43,278.49 is: 59,724.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,088.48 : 109,142.09 = 43,278.49 : x
  2. Step 2: Convert to fraction form
    79,088.48/109,142.09 = 43,278.49/x
  3. Step 3: Cross multiply
    79,088.48x = 109,142.09 × 43,278.49
  4. Step 4: Simplify right side
    79,088.48x = 4,723,504,850.64
  5. Step 5: Solve for x
    x = 4,723,504,850.64/79,088.48
  6. Step 6: Final answer
    x = 59,724.31

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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.