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Finding the Fourth Proportional to 80,256.86, 110,772.90 and 53,400.50

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Solution

The fourth proportional to 80,256.86, 110,772.90 and 53,400.50 is: 73,704.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,256.86 : 110,772.90 = 53,400.50 : x
  2. Step 2: Convert to fraction form
    80,256.86/110,772.90 = 53,400.50/x
  3. Step 3: Cross multiply
    80,256.86x = 110,772.90 × 53,400.50
  4. Step 4: Simplify right side
    80,256.86x = 5,915,328,246.45
  5. Step 5: Solve for x
    x = 5,915,328,246.45/80,256.86
  6. Step 6: Final answer
    x = 73,704.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.