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Finding the Fourth Proportional to 53,187.68, 79,781.28 and 13,741.44

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Solution

The fourth proportional to 53,187.68, 79,781.28 and 13,741.44 is: 20,612.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,187.68 : 79,781.28 = 13,741.44 : x
  2. Step 2: Convert to fraction form
    53,187.68/79,781.28 = 13,741.44/x
  3. Step 3: Cross multiply
    53,187.68x = 79,781.28 × 13,741.44
  4. Step 4: Simplify right side
    53,187.68x = 1,096,309,672.24
  5. Step 5: Solve for x
    x = 1,096,309,672.24/53,187.68
  6. Step 6: Final answer
    x = 20,612.10

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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.