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Finding the Fourth Proportional to 79,309.50, 118,964.25 and 30,061.50

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Solution

The fourth proportional to 79,309.50, 118,964.25 and 30,061.50 is: 45,092.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,309.50 : 118,964.25 = 30,061.50 : x
  2. Step 2: Convert to fraction form
    79,309.50/118,964.25 = 30,061.50/x
  3. Step 3: Cross multiply
    79,309.50x = 118,964.25 × 30,061.50
  4. Step 4: Simplify right side
    79,309.50x = 3,576,243,801.38
  5. Step 5: Solve for x
    x = 3,576,243,801.38/79,309.50
  6. Step 6: Final answer
    x = 45,092.25

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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.