Home / 57,780.51-86,670.46-18,340.66

Finding the Fourth Proportional to 57,780.51, 86,670.46 and 18,340.66

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Solution

The fourth proportional to 57,780.51, 86,670.46 and 18,340.66 is: 27,510.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,780.51 : 86,670.46 = 18,340.66 : x
  2. Step 2: Convert to fraction form
    57,780.51/86,670.46 = 18,340.66/x
  3. Step 3: Cross multiply
    57,780.51x = 86,670.46 × 18,340.66
  4. Step 4: Simplify right side
    57,780.51x = 1,589,593,438.90
  5. Step 5: Solve for x
    x = 1,589,593,438.90/57,780.51
  6. Step 6: Final answer
    x = 27,510.89

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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.