Home / 71,601.20-98,809.68-39,770.36

Finding the Fourth Proportional to 71,601.20, 98,809.68 and 39,770.36

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Solution

The fourth proportional to 71,601.20, 98,809.68 and 39,770.36 is: 54,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,601.20 : 98,809.68 = 39,770.36 : x
  2. Step 2: Convert to fraction form
    71,601.20/98,809.68 = 39,770.36/x
  3. Step 3: Cross multiply
    71,601.20x = 98,809.68 × 39,770.36
  4. Step 4: Simplify right side
    71,601.20x = 3,929,696,051.04
  5. Step 5: Solve for x
    x = 3,929,696,051.04/71,601.20
  6. Step 6: Final answer
    x = 54,883.11

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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.