Home / 71,481.04-98,640.36-39,647.12

Finding the Fourth Proportional to 71,481.04, 98,640.36 and 39,647.12

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Solution

The fourth proportional to 71,481.04, 98,640.36 and 39,647.12 is: 54,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,481.04 : 98,640.36 = 39,647.12 : x
  2. Step 2: Convert to fraction form
    71,481.04/98,640.36 = 39,647.12/x
  3. Step 3: Cross multiply
    71,481.04x = 98,640.36 × 39,647.12
  4. Step 4: Simplify right side
    71,481.04x = 3,910,806,189.76
  5. Step 5: Solve for x
    x = 3,910,806,189.76/71,481.04
  6. Step 6: Final answer
    x = 54,711.10

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1.5x scale

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.