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Finding the Fourth Proportional to 29,325.62, 43,988.47 and 7,139

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Solution

The fourth proportional to 29,325.62, 43,988.47 and 7,139 is: 10,708.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,325.62 : 43,988.47 = 7,139 : x
  2. Step 2: Convert to fraction form
    29,325.62/43,988.47 = 7,139/x
  3. Step 3: Cross multiply
    29,325.62x = 43,988.47 × 7,139
  4. Step 4: Simplify right side
    29,325.62x = 314,033,687.33
  5. Step 5: Solve for x
    x = 314,033,687.33/29,325.62
  6. Step 6: Final answer
    x = 10,708.51

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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.