Home / 71,715.85-98,971.37-39,884.06

Finding the Fourth Proportional to 71,715.85, 98,971.37 and 39,884.06

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Solution

The fourth proportional to 71,715.85, 98,971.37 and 39,884.06 is: 55,041.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,715.85 : 98,971.37 = 39,884.06 : x
  2. Step 2: Convert to fraction form
    71,715.85/98,971.37 = 39,884.06/x
  3. Step 3: Cross multiply
    71,715.85x = 98,971.37 × 39,884.06
  4. Step 4: Simplify right side
    71,715.85x = 3,947,380,256.94
  5. Step 5: Solve for x
    x = 3,947,380,256.94/71,715.85
  6. Step 6: Final answer
    x = 55,041.95

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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.