Home / 71,720.36-98,966.52-39,884.12

Finding the Fourth Proportional to 71,720.36, 98,966.52 and 39,884.12

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Solution

The fourth proportional to 71,720.36, 98,966.52 and 39,884.12 is: 55,035.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,720.36 : 98,966.52 = 39,884.12 : x
  2. Step 2: Convert to fraction form
    71,720.36/98,966.52 = 39,884.12/x
  3. Step 3: Cross multiply
    71,720.36x = 98,966.52 × 39,884.12
  4. Step 4: Simplify right side
    71,720.36x = 3,947,192,559.66
  5. Step 5: Solve for x
    x = 3,947,192,559.66/71,720.36
  6. Step 6: Final answer
    x = 55,035.87

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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.