Home / 81,456.05-112,291.56-57,183.10

Finding the Fourth Proportional to 81,456.05, 112,291.56 and 57,183.10

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Solution

The fourth proportional to 81,456.05, 112,291.56 and 57,183.10 is: 78,830.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,456.05 : 112,291.56 = 57,183.10 : x
  2. Step 2: Convert to fraction form
    81,456.05/112,291.56 = 57,183.10/x
  3. Step 3: Cross multiply
    81,456.05x = 112,291.56 × 57,183.10
  4. Step 4: Simplify right side
    81,456.05x = 6,421,180,072.14
  5. Step 5: Solve for x
    x = 6,421,180,072.14/81,456.05
  6. Step 6: Final answer
    x = 78,830.00

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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.