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Finding the Fourth Proportional to 186,022.78, 279,034.18 and 45,781.41

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Solution

The fourth proportional to 186,022.78, 279,034.18 and 45,781.41 is: 68,672.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,022.78 : 279,034.18 = 45,781.41 : x
  2. Step 2: Convert to fraction form
    186,022.78/279,034.18 = 45,781.41/x
  3. Step 3: Cross multiply
    186,022.78x = 279,034.18 × 45,781.41
  4. Step 4: Simplify right side
    186,022.78x = 12,774,578,198.59
  5. Step 5: Solve for x
    x = 12,774,578,198.59/186,022.78
  6. Step 6: Final answer
    x = 68,672.12

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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.