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Finding the Fourth Proportional to 56,680.40, 85,020.60 and 50,556.80

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Solution

The fourth proportional to 56,680.40, 85,020.60 and 50,556.80 is: 75,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,680.40 : 85,020.60 = 50,556.80 : x
  2. Step 2: Convert to fraction form
    56,680.40/85,020.60 = 50,556.80/x
  3. Step 3: Cross multiply
    56,680.40x = 85,020.60 × 50,556.80
  4. Step 4: Simplify right side
    56,680.40x = 4,298,369,470.08
  5. Step 5: Solve for x
    x = 4,298,369,470.08/56,680.40
  6. Step 6: Final answer
    x = 75,835.20

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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.