Home / 71,115.03-98,140.01-39,282.03

Finding the Fourth Proportional to 71,115.03, 98,140.01 and 39,282.03

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Solution

The fourth proportional to 71,115.03, 98,140.01 and 39,282.03 is: 54,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,115.03 : 98,140.01 = 39,282.03 : x
  2. Step 2: Convert to fraction form
    71,115.03/98,140.01 = 39,282.03/x
  3. Step 3: Cross multiply
    71,115.03x = 98,140.01 × 39,282.03
  4. Step 4: Simplify right side
    71,115.03x = 3,855,138,620.61
  5. Step 5: Solve for x
    x = 3,855,138,620.61/71,115.03
  6. Step 6: Final answer
    x = 54,209.90

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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.