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Finding the Fourth Proportional to 53,404.40, 80,111.15 and 13,961.45

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Solution

The fourth proportional to 53,404.40, 80,111.15 and 13,961.45 is: 20,943.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,404.40 : 80,111.15 = 13,961.45 : x
  2. Step 2: Convert to fraction form
    53,404.40/80,111.15 = 13,961.45/x
  3. Step 3: Cross multiply
    53,404.40x = 80,111.15 × 13,961.45
  4. Step 4: Simplify right side
    53,404.40x = 1,118,467,344.80
  5. Step 5: Solve for x
    x = 1,118,467,344.80/53,404.40
  6. Step 6: Final answer
    x = 20,943.36

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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.