Home / 43,289.07-64,936.05-12,126.75

Finding the Fourth Proportional to 43,289.07, 64,936.05 and 12,126.75

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Solution

The fourth proportional to 43,289.07, 64,936.05 and 12,126.75 is: 18,190.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,289.07 : 64,936.05 = 12,126.75 : x
  2. Step 2: Convert to fraction form
    43,289.07/64,936.05 = 12,126.75/x
  3. Step 3: Cross multiply
    43,289.07x = 64,936.05 × 12,126.75
  4. Step 4: Simplify right side
    43,289.07x = 787,463,244.34
  5. Step 5: Solve for x
    x = 787,463,244.34/43,289.07
  6. Step 6: Final answer
    x = 18,190.81

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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.