Home / 45,257.86-67,856.91-20,263.69

Finding the Fourth Proportional to 45,257.86, 67,856.91 and 20,263.69

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Solution

The fourth proportional to 45,257.86, 67,856.91 and 20,263.69 is: 30,382.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,257.86 : 67,856.91 = 20,263.69 : x
  2. Step 2: Convert to fraction form
    45,257.86/67,856.91 = 20,263.69/x
  3. Step 3: Cross multiply
    45,257.86x = 67,856.91 × 20,263.69
  4. Step 4: Simplify right side
    45,257.86x = 1,375,031,388.60
  5. Step 5: Solve for x
    x = 1,375,031,388.60/45,257.86
  6. Step 6: Final answer
    x = 30,382.16

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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.