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Finding the Fourth Proportional to 53,840.40, 80,764.20 and 18,301.20

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Solution

The fourth proportional to 53,840.40, 80,764.20 and 18,301.20 is: 27,453.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,840.40 : 80,764.20 = 18,301.20 : x
  2. Step 2: Convert to fraction form
    53,840.40/80,764.20 = 18,301.20/x
  3. Step 3: Cross multiply
    53,840.40x = 80,764.20 × 18,301.20
  4. Step 4: Simplify right side
    53,840.40x = 1,478,081,777.04
  5. Step 5: Solve for x
    x = 1,478,081,777.04/53,840.40
  6. Step 6: Final answer
    x = 27,453.02

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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.