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Finding the Fourth Proportional to 53,894.48, 80,883.23 and 43,390.20

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Solution

The fourth proportional to 53,894.48, 80,883.23 and 43,390.20 is: 65,118.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,894.48 : 80,883.23 = 43,390.20 : x
  2. Step 2: Convert to fraction form
    53,894.48/80,883.23 = 43,390.20/x
  3. Step 3: Cross multiply
    53,894.48x = 80,883.23 × 43,390.20
  4. Step 4: Simplify right side
    53,894.48x = 3,509,539,309.40
  5. Step 5: Solve for x
    x = 3,509,539,309.40/53,894.48
  6. Step 6: Final answer
    x = 65,118.71

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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.