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Finding the Fourth Proportional to 60,930, 91,395.12 and 19,377.12

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Solution

The fourth proportional to 60,930, 91,395.12 and 19,377.12 is: 29,065.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,930 : 91,395.12 = 19,377.12 : x
  2. Step 2: Convert to fraction form
    60,930/91,395.12 = 19,377.12/x
  3. Step 3: Cross multiply
    60,930x = 91,395.12 × 19,377.12
  4. Step 4: Simplify right side
    60,930x = 1,770,974,207.65
  5. Step 5: Solve for x
    x = 1,770,974,207.65/60,930
  6. Step 6: Final answer
    x = 29,065.72

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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.