Home / 318,027.06-477,039.78-81,369.36

Finding the Fourth Proportional to 318,027.06, 477,039.78 and 81,369.36

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Solution

The fourth proportional to 318,027.06, 477,039.78 and 81,369.36 is: 122,053.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,027.06 : 477,039.78 = 81,369.36 : x
  2. Step 2: Convert to fraction form
    318,027.06/477,039.78 = 81,369.36/x
  3. Step 3: Cross multiply
    318,027.06x = 477,039.78 × 81,369.36
  4. Step 4: Simplify right side
    318,027.06x = 38,816,421,593.14
  5. Step 5: Solve for x
    x = 38,816,421,593.14/318,027.06
  6. Step 6: Final answer
    x = 122,053.83

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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.