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Finding the Fourth Proportional to 56,808.48, 85,250.64 and 19,872.48

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Solution

The fourth proportional to 56,808.48, 85,250.64 and 19,872.48 is: 29,821.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,808.48 : 85,250.64 = 19,872.48 : x
  2. Step 2: Convert to fraction form
    56,808.48/85,250.64 = 19,872.48/x
  3. Step 3: Cross multiply
    56,808.48x = 85,250.64 × 19,872.48
  4. Step 4: Simplify right side
    56,808.48x = 1,694,141,638.39
  5. Step 5: Solve for x
    x = 1,694,141,638.39/56,808.48
  6. Step 6: Final answer
    x = 29,821.98

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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.