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Finding the Fourth Proportional to 53,961.14, 80,978.07 and 18,901.10

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Solution

The fourth proportional to 53,961.14, 80,978.07 and 18,901.10 is: 28,364.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,961.14 : 80,978.07 = 18,901.10 : x
  2. Step 2: Convert to fraction form
    53,961.14/80,978.07 = 18,901.10/x
  3. Step 3: Cross multiply
    53,961.14x = 80,978.07 × 18,901.10
  4. Step 4: Simplify right side
    53,961.14x = 1,530,574,598.88
  5. Step 5: Solve for x
    x = 1,530,574,598.88/53,961.14
  6. Step 6: Final answer
    x = 28,364.39

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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.