Home / 85,086.18-117,410.45-49,287.69

Finding the Fourth Proportional to 85,086.18, 117,410.45 and 49,287.69

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Solution

The fourth proportional to 85,086.18, 117,410.45 and 49,287.69 is: 68,012.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,086.18 : 117,410.45 = 49,287.69 : x
  2. Step 2: Convert to fraction form
    85,086.18/117,410.45 = 49,287.69/x
  3. Step 3: Cross multiply
    85,086.18x = 117,410.45 × 49,287.69
  4. Step 4: Simplify right side
    85,086.18x = 5,786,889,615.92
  5. Step 5: Solve for x
    x = 5,786,889,615.92/85,086.18
  6. Step 6: Final answer
    x = 68,012.10

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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.