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Finding the Fourth Proportional to 45,956.94, 68,838.54 and 21,017.99

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Solution

The fourth proportional to 45,956.94, 68,838.54 and 21,017.99 is: 31,482.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,956.94 : 68,838.54 = 21,017.99 : x
  2. Step 2: Convert to fraction form
    45,956.94/68,838.54 = 21,017.99/x
  3. Step 3: Cross multiply
    45,956.94x = 68,838.54 × 21,017.99
  4. Step 4: Simplify right side
    45,956.94x = 1,446,847,745.33
  5. Step 5: Solve for x
    x = 1,446,847,745.33/45,956.94
  6. Step 6: Final answer
    x = 31,482.68

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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.