Home / 79,804.22-109,331.33-76,812.89

Finding the Fourth Proportional to 79,804.22, 109,331.33 and 76,812.89

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Solution

The fourth proportional to 79,804.22, 109,331.33 and 76,812.89 is: 105,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,804.22 : 109,331.33 = 76,812.89 : x
  2. Step 2: Convert to fraction form
    79,804.22/109,331.33 = 76,812.89/x
  3. Step 3: Cross multiply
    79,804.22x = 109,331.33 × 76,812.89
  4. Step 4: Simplify right side
    79,804.22x = 8,398,054,494.12
  5. Step 5: Solve for x
    x = 8,398,054,494.12/79,804.22
  6. Step 6: Final answer
    x = 105,233.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.