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Finding the Fourth Proportional to 57,676.02, 86,461.49 and 20,215.51

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Solution

The fourth proportional to 57,676.02, 86,461.49 and 20,215.51 is: 30,304.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,676.02 : 86,461.49 = 20,215.51 : x
  2. Step 2: Convert to fraction form
    57,676.02/86,461.49 = 20,215.51/x
  3. Step 3: Cross multiply
    57,676.02x = 86,461.49 × 20,215.51
  4. Step 4: Simplify right side
    57,676.02x = 1,747,862,950.09
  5. Step 5: Solve for x
    x = 1,747,862,950.09/57,676.02
  6. Step 6: Final answer
    x = 30,304.85

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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.