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Finding the Fourth Proportional to 57,991.35, 86,984.10 and 33,989.01

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Solution

The fourth proportional to 57,991.35, 86,984.10 and 33,989.01 is: 50,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,991.35 : 86,984.10 = 33,989.01 : x
  2. Step 2: Convert to fraction form
    57,991.35/86,984.10 = 33,989.01/x
  3. Step 3: Cross multiply
    57,991.35x = 86,984.10 × 33,989.01
  4. Step 4: Simplify right side
    57,991.35x = 2,956,503,444.74
  5. Step 5: Solve for x
    x = 2,956,503,444.74/57,991.35
  6. Step 6: Final answer
    x = 50,981.80

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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.