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Finding the Fourth Proportional to 61,456.28, 92,199 and 19,903.28

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Solution

The fourth proportional to 61,456.28, 92,199 and 19,903.28 is: 29,859.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,456.28 : 92,199 = 19,903.28 : x
  2. Step 2: Convert to fraction form
    61,456.28/92,199 = 19,903.28/x
  3. Step 3: Cross multiply
    61,456.28x = 92,199 × 19,903.28
  4. Step 4: Simplify right side
    61,456.28x = 1,835,062,512.72
  5. Step 5: Solve for x
    x = 1,835,062,512.72/61,456.28
  6. Step 6: Final answer
    x = 29,859.64

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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.