Home / 91,676.78-137,554.38-38,381.21

Finding the Fourth Proportional to 91,676.78, 137,554.38 and 38,381.21

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Solution

The fourth proportional to 91,676.78, 137,554.38 and 38,381.21 is: 57,588.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,676.78 : 137,554.38 = 38,381.21 : x
  2. Step 2: Convert to fraction form
    91,676.78/137,554.38 = 38,381.21/x
  3. Step 3: Cross multiply
    91,676.78x = 137,554.38 × 38,381.21
  4. Step 4: Simplify right side
    91,676.78x = 5,279,503,545.20
  5. Step 5: Solve for x
    x = 5,279,503,545.20/91,676.78
  6. Step 6: Final answer
    x = 57,588.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.