Home / 71,015.85-98,003.91-39,186.80

Finding the Fourth Proportional to 71,015.85, 98,003.91 and 39,186.80

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Solution

The fourth proportional to 71,015.85, 98,003.91 and 39,186.80 is: 54,078.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,015.85 : 98,003.91 = 39,186.80 : x
  2. Step 2: Convert to fraction form
    71,015.85/98,003.91 = 39,186.80/x
  3. Step 3: Cross multiply
    71,015.85x = 98,003.91 × 39,186.80
  4. Step 4: Simplify right side
    71,015.85x = 3,840,459,644.83
  5. Step 5: Solve for x
    x = 3,840,459,644.83/71,015.85
  6. Step 6: Final answer
    x = 54,078.91

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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.