Home / 57,781.51-86,671.96-18,341.66

Finding the Fourth Proportional to 57,781.51, 86,671.96 and 18,341.66

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Solution

The fourth proportional to 57,781.51, 86,671.96 and 18,341.66 is: 27,512.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,781.51 : 86,671.96 = 18,341.66 : x
  2. Step 2: Convert to fraction form
    57,781.51/86,671.96 = 18,341.66/x
  3. Step 3: Cross multiply
    57,781.51x = 86,671.96 × 18,341.66
  4. Step 4: Simplify right side
    57,781.51x = 1,589,707,621.85
  5. Step 5: Solve for x
    x = 1,589,707,621.85/57,781.51
  6. Step 6: Final answer
    x = 27,512.39

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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.