Home / 81,095.11-111,911.02-45,285.15

Finding the Fourth Proportional to 81,095.11, 111,911.02 and 45,285.15

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Solution

The fourth proportional to 81,095.11, 111,911.02 and 45,285.15 is: 62,493.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,095.11 : 111,911.02 = 45,285.15 : x
  2. Step 2: Convert to fraction form
    81,095.11/111,911.02 = 45,285.15/x
  3. Step 3: Cross multiply
    81,095.11x = 111,911.02 × 45,285.15
  4. Step 4: Simplify right side
    81,095.11x = 5,067,907,327.35
  5. Step 5: Solve for x
    x = 5,067,907,327.35/81,095.11
  6. Step 6: Final answer
    x = 62,493.38

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Double scale
Find fourth proportional to 81,096.11, 111,912.40 and 45,286.15
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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.