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Finding the Fourth Proportional to 79,272, 118,908 and 30,024

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Solution

The fourth proportional to 79,272, 118,908 and 30,024 is: 45,036

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,272 : 118,908 = 30,024 : x
  2. Step 2: Convert to fraction form
    79,272/118,908 = 30,024/x
  3. Step 3: Cross multiply
    79,272x = 118,908 × 30,024
  4. Step 4: Simplify right side
    79,272x = 3,570,093,792
  5. Step 5: Solve for x
    x = 3,570,093,792/79,272
  6. Step 6: Final answer
    x = 45,036

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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.