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Finding the Fourth Proportional to 53,187.94, 79,775.28 and 15,747.21

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Solution

The fourth proportional to 53,187.94, 79,775.28 and 15,747.21 is: 23,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,187.94 : 79,775.28 = 15,747.21 : x
  2. Step 2: Convert to fraction form
    53,187.94/79,775.28 = 15,747.21/x
  3. Step 3: Cross multiply
    53,187.94x = 79,775.28 × 15,747.21
  4. Step 4: Simplify right side
    53,187.94x = 1,256,238,086.97
  5. Step 5: Solve for x
    x = 1,256,238,086.97/53,187.94
  6. Step 6: Final answer
    x = 23,618.85

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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.