Home / 57,785.67-86,685.73-19,842.30

Finding the Fourth Proportional to 57,785.67, 86,685.73 and 19,842.30

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Solution

The fourth proportional to 57,785.67, 86,685.73 and 19,842.30 is: 29,765.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,785.67 : 86,685.73 = 19,842.30 : x
  2. Step 2: Convert to fraction form
    57,785.67/86,685.73 = 19,842.30/x
  3. Step 3: Cross multiply
    57,785.67x = 86,685.73 × 19,842.30
  4. Step 4: Simplify right side
    57,785.67x = 1,720,044,210.77
  5. Step 5: Solve for x
    x = 1,720,044,210.77/57,785.67
  6. Step 6: Final answer
    x = 29,765.93

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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.