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Finding the Fourth Proportional to 57,253.24, 78,918.16 and 45,133.96

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Solution

The fourth proportional to 57,253.24, 78,918.16 and 45,133.96 is: 62,212.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,253.24 : 78,918.16 = 45,133.96 : x
  2. Step 2: Convert to fraction form
    57,253.24/78,918.16 = 45,133.96/x
  3. Step 3: Cross multiply
    57,253.24x = 78,918.16 × 45,133.96
  4. Step 4: Simplify right side
    57,253.24x = 3,561,889,076.71
  5. Step 5: Solve for x
    x = 3,561,889,076.71/57,253.24
  6. Step 6: Final answer
    x = 62,212.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.