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Finding the Fourth Proportional to 51,668.48, 71,303.28 and 49,880.60

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Solution

The fourth proportional to 51,668.48, 71,303.28 and 49,880.60 is: 68,835.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,668.48 : 71,303.28 = 49,880.60 : x
  2. Step 2: Convert to fraction form
    51,668.48/71,303.28 = 49,880.60/x
  3. Step 3: Cross multiply
    51,668.48x = 71,303.28 × 49,880.60
  4. Step 4: Simplify right side
    51,668.48x = 3,556,650,388.37
  5. Step 5: Solve for x
    x = 3,556,650,388.37/51,668.48
  6. Step 6: Final answer
    x = 68,835.98

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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.