Home / 79,123.23-109,139.67-55,241.19

Finding the Fourth Proportional to 79,123.23, 109,139.67 and 55,241.19

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Solution

The fourth proportional to 79,123.23, 109,139.67 and 55,241.19 is: 76,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,123.23 : 109,139.67 = 55,241.19 : x
  2. Step 2: Convert to fraction form
    79,123.23/109,139.67 = 55,241.19/x
  3. Step 3: Cross multiply
    79,123.23x = 109,139.67 × 55,241.19
  4. Step 4: Simplify right side
    79,123.23x = 6,029,005,247.01
  5. Step 5: Solve for x
    x = 6,029,005,247.01/79,123.23
  6. Step 6: Final answer
    x = 76,197.66

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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.