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Finding the Fourth Proportional to 53,147.60, 79,721.40 and 50,728.40

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Solution

The fourth proportional to 53,147.60, 79,721.40 and 50,728.40 is: 76,092.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,147.60 : 79,721.40 = 50,728.40 : x
  2. Step 2: Convert to fraction form
    53,147.60/79,721.40 = 50,728.40/x
  3. Step 3: Cross multiply
    53,147.60x = 79,721.40 × 50,728.40
  4. Step 4: Simplify right side
    53,147.60x = 4,044,139,067.76
  5. Step 5: Solve for x
    x = 4,044,139,067.76/53,147.60
  6. Step 6: Final answer
    x = 76,092.60

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Similar ratio
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1.5x scale

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.