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Finding the Fourth Proportional to 53,216.60, 79,835.70 and 18,159.80

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Solution

The fourth proportional to 53,216.60, 79,835.70 and 18,159.80 is: 27,243.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,216.60 : 79,835.70 = 18,159.80 : x
  2. Step 2: Convert to fraction form
    53,216.60/79,835.70 = 18,159.80/x
  3. Step 3: Cross multiply
    53,216.60x = 79,835.70 × 18,159.80
  4. Step 4: Simplify right side
    53,216.60x = 1,449,800,344.86
  5. Step 5: Solve for x
    x = 1,449,800,344.86/53,216.60
  6. Step 6: Final answer
    x = 27,243.39

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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.