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Finding the Fourth Proportional to 53,841.60, 80,848.80 and 40,708.80

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Solution

The fourth proportional to 53,841.60, 80,848.80 and 40,708.80 is: 61,128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,841.60 : 80,848.80 = 40,708.80 : x
  2. Step 2: Convert to fraction form
    53,841.60/80,848.80 = 40,708.80/x
  3. Step 3: Cross multiply
    53,841.60x = 80,848.80 × 40,708.80
  4. Step 4: Simplify right side
    53,841.60x = 3,291,257,629.44
  5. Step 5: Solve for x
    x = 3,291,257,629.44/53,841.60
  6. Step 6: Final answer
    x = 61,128.53

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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.