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Finding the Fourth Proportional to 53,875.88, 80,813.81 and 16,939.88

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Solution

The fourth proportional to 53,875.88, 80,813.81 and 16,939.88 is: 25,409.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,875.88 : 80,813.81 = 16,939.88 : x
  2. Step 2: Convert to fraction form
    53,875.88/80,813.81 = 16,939.88/x
  3. Step 3: Cross multiply
    53,875.88x = 80,813.81 × 16,939.88
  4. Step 4: Simplify right side
    53,875.88x = 1,368,975,882.02
  5. Step 5: Solve for x
    x = 1,368,975,882.02/53,875.88
  6. Step 6: Final answer
    x = 25,409.81

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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.