Home / 85,105.69-117,446.03-47,381.29

Finding the Fourth Proportional to 85,105.69, 117,446.03 and 47,381.29

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Solution

The fourth proportional to 85,105.69, 117,446.03 and 47,381.29 is: 65,386.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,105.69 : 117,446.03 = 47,381.29 : x
  2. Step 2: Convert to fraction form
    85,105.69/117,446.03 = 47,381.29/x
  3. Step 3: Cross multiply
    85,105.69x = 117,446.03 × 47,381.29
  4. Step 4: Simplify right side
    85,105.69x = 5,564,744,169.87
  5. Step 5: Solve for x
    x = 5,564,744,169.87/85,105.69
  6. Step 6: Final answer
    x = 65,386.28

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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.