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Finding the Fourth Proportional to 40,958, 61,389.07 and 15,640.94

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Solution

The fourth proportional to 40,958, 61,389.07 and 15,640.94 is: 23,443.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,958 : 61,389.07 = 15,640.94 : x
  2. Step 2: Convert to fraction form
    40,958/61,389.07 = 15,640.94/x
  3. Step 3: Cross multiply
    40,958x = 61,389.07 × 15,640.94
  4. Step 4: Simplify right side
    40,958x = 960,182,760.53
  5. Step 5: Solve for x
    x = 960,182,760.53/40,958
  6. Step 6: Final answer
    x = 23,443.11

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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.