Home / 306,027.06-459,039.68-81,387.30

Finding the Fourth Proportional to 306,027.06, 459,039.68 and 81,387.30

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Solution

The fourth proportional to 306,027.06, 459,039.68 and 81,387.30 is: 122,080.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,027.06 : 459,039.68 = 81,387.30 : x
  2. Step 2: Convert to fraction form
    306,027.06/459,039.68 = 81,387.30/x
  3. Step 3: Cross multiply
    306,027.06x = 459,039.68 × 81,387.30
  4. Step 4: Simplify right side
    306,027.06x = 37,360,001,092.19
  5. Step 5: Solve for x
    x = 37,360,001,092.19/306,027.06
  6. Step 6: Final answer
    x = 122,080.71

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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.