Home / 79,286.38-109,420.27-52,381.76

Finding the Fourth Proportional to 79,286.38, 109,420.27 and 52,381.76

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Solution

The fourth proportional to 79,286.38, 109,420.27 and 52,381.76 is: 72,290.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,286.38 : 109,420.27 = 52,381.76 : x
  2. Step 2: Convert to fraction form
    79,286.38/109,420.27 = 52,381.76/x
  3. Step 3: Cross multiply
    79,286.38x = 109,420.27 × 52,381.76
  4. Step 4: Simplify right side
    79,286.38x = 5,731,625,644.22
  5. Step 5: Solve for x
    x = 5,731,625,644.22/79,286.38
  6. Step 6: Final answer
    x = 72,290.17

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1.5x scale

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.