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Finding the Fourth Proportional to 56,853.48, 85,299.89 and 19,439.89

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Solution

The fourth proportional to 56,853.48, 85,299.89 and 19,439.89 is: 29,166.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,853.48 : 85,299.89 = 19,439.89 : x
  2. Step 2: Convert to fraction form
    56,853.48/85,299.89 = 19,439.89/x
  3. Step 3: Cross multiply
    56,853.48x = 85,299.89 × 19,439.89
  4. Step 4: Simplify right side
    56,853.48x = 1,658,220,168.16
  5. Step 5: Solve for x
    x = 1,658,220,168.16/56,853.48
  6. Step 6: Final answer
    x = 29,166.56

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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.