Home / 279,039.05-418,557.63-76,635.33

Finding the Fourth Proportional to 279,039.05, 418,557.63 and 76,635.33

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Solution

The fourth proportional to 279,039.05, 418,557.63 and 76,635.33 is: 114,952.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,039.05 : 418,557.63 = 76,635.33 : x
  2. Step 2: Convert to fraction form
    279,039.05/418,557.63 = 76,635.33/x
  3. Step 3: Cross multiply
    279,039.05x = 418,557.63 × 76,635.33
  4. Step 4: Simplify right side
    279,039.05x = 32,076,302,099.07
  5. Step 5: Solve for x
    x = 32,076,302,099.07/279,039.05
  6. Step 6: Final answer
    x = 114,952.74

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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.