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Finding the Fourth Proportional to 34,668.78, 47,841.79 and 21,928.92

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Solution

The fourth proportional to 34,668.78, 47,841.79 and 21,928.92 is: 30,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,668.78 : 47,841.79 = 21,928.92 : x
  2. Step 2: Convert to fraction form
    34,668.78/47,841.79 = 21,928.92/x
  3. Step 3: Cross multiply
    34,668.78x = 47,841.79 × 21,928.92
  4. Step 4: Simplify right side
    34,668.78x = 1,049,118,785.57
  5. Step 5: Solve for x
    x = 1,049,118,785.57/34,668.78
  6. Step 6: Final answer
    x = 30,261.20

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1.5x scale

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.