Home / 45,432.90-68,143.68-12,154.86

Finding the Fourth Proportional to 45,432.90, 68,143.68 and 12,154.86

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Solution

The fourth proportional to 45,432.90, 68,143.68 and 12,154.86 is: 18,230.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,432.90 : 68,143.68 = 12,154.86 : x
  2. Step 2: Convert to fraction form
    45,432.90/68,143.68 = 12,154.86/x
  3. Step 3: Cross multiply
    45,432.90x = 68,143.68 × 12,154.86
  4. Step 4: Simplify right side
    45,432.90x = 828,276,890.28
  5. Step 5: Solve for x
    x = 828,276,890.28/45,432.90
  6. Step 6: Final answer
    x = 18,230.77

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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.