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Finding the Fourth Proportional to 72,993.78, 109,490.43 and 17,589.78

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Solution

The fourth proportional to 72,993.78, 109,490.43 and 17,589.78 is: 26,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,993.78 : 109,490.43 = 17,589.78 : x
  2. Step 2: Convert to fraction form
    72,993.78/109,490.43 = 17,589.78/x
  3. Step 3: Cross multiply
    72,993.78x = 109,490.43 × 17,589.78
  4. Step 4: Simplify right side
    72,993.78x = 1,925,912,575.81
  5. Step 5: Solve for x
    x = 1,925,912,575.81/72,993.78
  6. Step 6: Final answer
    x = 26,384.61

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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.