Home / 71,719.32-98,971.26-39,887.54

Finding the Fourth Proportional to 71,719.32, 98,971.26 and 39,887.54

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Solution

The fourth proportional to 71,719.32, 98,971.26 and 39,887.54 is: 55,044.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,719.32 : 98,971.26 = 39,887.54 : x
  2. Step 2: Convert to fraction form
    71,719.32/98,971.26 = 39,887.54/x
  3. Step 3: Cross multiply
    71,719.32x = 98,971.26 × 39,887.54
  4. Step 4: Simplify right side
    71,719.32x = 3,947,720,092.10
  5. Step 5: Solve for x
    x = 3,947,720,092.10/71,719.32
  6. Step 6: Final answer
    x = 55,044.03

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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.