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Finding the Fourth Proportional to 45,784.80, 68,613.20 and 36,440.80

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Solution

The fourth proportional to 45,784.80, 68,613.20 and 36,440.80 is: 54,610.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,784.80 : 68,613.20 = 36,440.80 : x
  2. Step 2: Convert to fraction form
    45,784.80/68,613.20 = 36,440.80/x
  3. Step 3: Cross multiply
    45,784.80x = 68,613.20 × 36,440.80
  4. Step 4: Simplify right side
    45,784.80x = 2,500,319,898.56
  5. Step 5: Solve for x
    x = 2,500,319,898.56/45,784.80
  6. Step 6: Final answer
    x = 54,610.26

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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.