Home / 45,858.48-68,782.34-12,581.91

Finding the Fourth Proportional to 45,858.48, 68,782.34 and 12,581.91

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Solution

The fourth proportional to 45,858.48, 68,782.34 and 12,581.91 is: 18,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,858.48 : 68,782.34 = 12,581.91 : x
  2. Step 2: Convert to fraction form
    45,858.48/68,782.34 = 12,581.91/x
  3. Step 3: Cross multiply
    45,858.48x = 68,782.34 × 12,581.91
  4. Step 4: Simplify right side
    45,858.48x = 865,413,148.56
  5. Step 5: Solve for x
    x = 865,413,148.56/45,858.48
  6. Step 6: Final answer
    x = 18,871.39

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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.