Home / 79,269.10-109,309.71-55,387.06

Finding the Fourth Proportional to 79,269.10, 109,309.71 and 55,387.06

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Solution

The fourth proportional to 79,269.10, 109,309.71 and 55,387.06 is: 76,377.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,269.10 : 109,309.71 = 55,387.06 : x
  2. Step 2: Convert to fraction form
    79,269.10/109,309.71 = 55,387.06/x
  3. Step 3: Cross multiply
    79,269.10x = 109,309.71 × 55,387.06
  4. Step 4: Simplify right side
    79,269.10x = 6,054,343,466.35
  5. Step 5: Solve for x
    x = 6,054,343,466.35/79,269.10
  6. Step 6: Final answer
    x = 76,377.09

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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.