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Finding the Fourth Proportional to 61,143.64, 91,708.28 and 16,774.88

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Solution

The fourth proportional to 61,143.64, 91,708.28 and 16,774.88 is: 25,160.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,143.64 : 91,708.28 = 16,774.88 : x
  2. Step 2: Convert to fraction form
    61,143.64/91,708.28 = 16,774.88/x
  3. Step 3: Cross multiply
    61,143.64x = 91,708.28 × 16,774.88
  4. Step 4: Simplify right side
    61,143.64x = 1,538,395,392.01
  5. Step 5: Solve for x
    x = 1,538,395,392.01/61,143.64
  6. Step 6: Final answer
    x = 25,160.35

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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.