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Finding the Fourth Proportional to 60,993.09, 91,467.15 and 21,000.69

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Solution

The fourth proportional to 60,993.09, 91,467.15 and 21,000.69 is: 31,493.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,993.09 : 91,467.15 = 21,000.69 : x
  2. Step 2: Convert to fraction form
    60,993.09/91,467.15 = 21,000.69/x
  3. Step 3: Cross multiply
    60,993.09x = 91,467.15 × 21,000.69
  4. Step 4: Simplify right side
    60,993.09x = 1,920,873,262.33
  5. Step 5: Solve for x
    x = 1,920,873,262.33/60,993.09
  6. Step 6: Final answer
    x = 31,493.29

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1.5x scale

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.