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Finding the Fourth Proportional to 29,008, 43,512.04 and 7,120

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Solution

The fourth proportional to 29,008, 43,512.04 and 7,120 is: 10,680.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,008 : 43,512.04 = 7,120 : x
  2. Step 2: Convert to fraction form
    29,008/43,512.04 = 7,120/x
  3. Step 3: Cross multiply
    29,008x = 43,512.04 × 7,120
  4. Step 4: Simplify right side
    29,008x = 309,805,724.80
  5. Step 5: Solve for x
    x = 309,805,724.80/29,008
  6. Step 6: Final answer
    x = 10,680.01

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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.