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Finding the Fourth Proportional to 110,028, 165,042 and 60,780

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Solution

The fourth proportional to 110,028, 165,042 and 60,780 is: 91,170

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,028 : 165,042 = 60,780 : x
  2. Step 2: Convert to fraction form
    110,028/165,042 = 60,780/x
  3. Step 3: Cross multiply
    110,028x = 165,042 × 60,780
  4. Step 4: Simplify right side
    110,028x = 10,031,252,760
  5. Step 5: Solve for x
    x = 10,031,252,760/110,028
  6. Step 6: Final answer
    x = 91,170

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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.