Home / 81,050.74-121,568.81-57,459.39

Finding the Fourth Proportional to 81,050.74, 121,568.81 and 57,459.39

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Solution

The fourth proportional to 81,050.74, 121,568.81 and 57,459.39 is: 86,183.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,050.74 : 121,568.81 = 57,459.39 : x
  2. Step 2: Convert to fraction form
    81,050.74/121,568.81 = 57,459.39/x
  3. Step 3: Cross multiply
    81,050.74x = 121,568.81 × 57,459.39
  4. Step 4: Simplify right side
    81,050.74x = 6,985,269,665.63
  5. Step 5: Solve for x
    x = 6,985,269,665.63/81,050.74
  6. Step 6: Final answer
    x = 86,183.91

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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.