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Finding the Fourth Proportional to 57,994.56, 86,989.12 and 20,554.04

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Solution

The fourth proportional to 57,994.56, 86,989.12 and 20,554.04 is: 30,830.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,994.56 : 86,989.12 = 20,554.04 : x
  2. Step 2: Convert to fraction form
    57,994.56/86,989.12 = 20,554.04/x
  3. Step 3: Cross multiply
    57,994.56x = 86,989.12 × 20,554.04
  4. Step 4: Simplify right side
    57,994.56x = 1,787,977,852.04
  5. Step 5: Solve for x
    x = 1,787,977,852.04/57,994.56
  6. Step 6: Final answer
    x = 30,830.10

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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.