Home / 82,781.58-124,190.88-30,191.07

Finding the Fourth Proportional to 82,781.58, 124,190.88 and 30,191.07

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Solution

The fourth proportional to 82,781.58, 124,190.88 and 30,191.07 is: 45,293.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,781.58 : 124,190.88 = 30,191.07 : x
  2. Step 2: Convert to fraction form
    82,781.58/124,190.88 = 30,191.07/x
  3. Step 3: Cross multiply
    82,781.58x = 124,190.88 × 30,191.07
  4. Step 4: Simplify right side
    82,781.58x = 3,749,455,551.44
  5. Step 5: Solve for x
    x = 3,749,455,551.44/82,781.58
  6. Step 6: Final answer
    x = 45,293.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.