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Finding the Fourth Proportional to 57,703.41, 86,327.37 and 43,703.78

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Solution

The fourth proportional to 57,703.41, 86,327.37 and 43,703.78 is: 65,383.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,703.41 : 86,327.37 = 43,703.78 : x
  2. Step 2: Convert to fraction form
    57,703.41/86,327.37 = 43,703.78/x
  3. Step 3: Cross multiply
    57,703.41x = 86,327.37 × 43,703.78
  4. Step 4: Simplify right side
    57,703.41x = 3,772,831,954.82
  5. Step 5: Solve for x
    x = 3,772,831,954.82/57,703.41
  6. Step 6: Final answer
    x = 65,383.17

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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.