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Finding the Fourth Proportional to 57,994.40, 86,990.43 and 18,551.51

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Solution

The fourth proportional to 57,994.40, 86,990.43 and 18,551.51 is: 27,826.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,994.40 : 86,990.43 = 18,551.51 : x
  2. Step 2: Convert to fraction form
    57,994.40/86,990.43 = 18,551.51/x
  3. Step 3: Cross multiply
    57,994.40x = 86,990.43 × 18,551.51
  4. Step 4: Simplify right side
    57,994.40x = 1,613,803,832.05
  5. Step 5: Solve for x
    x = 1,613,803,832.05/57,994.40
  6. Step 6: Final answer
    x = 27,826.89

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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.