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Finding the Fourth Proportional to 71,623.92, 98,841 and 39,795.84

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Solution

The fourth proportional to 71,623.92, 98,841 and 39,795.84 is: 54,918.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,623.92 : 98,841 = 39,795.84 : x
  2. Step 2: Convert to fraction form
    71,623.92/98,841 = 39,795.84/x
  3. Step 3: Cross multiply
    71,623.92x = 98,841 × 39,795.84
  4. Step 4: Simplify right side
    71,623.92x = 3,933,460,621.44
  5. Step 5: Solve for x
    x = 3,933,460,621.44/71,623.92
  6. Step 6: Final answer
    x = 54,918.25

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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.