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Finding the Fourth Proportional to 54,185, 74,773.22 and 30,313.88

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Solution

The fourth proportional to 54,185, 74,773.22 and 30,313.88 is: 41,831.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,185 : 74,773.22 = 30,313.88 : x
  2. Step 2: Convert to fraction form
    54,185/74,773.22 = 30,313.88/x
  3. Step 3: Cross multiply
    54,185x = 74,773.22 × 30,313.88
  4. Step 4: Simplify right side
    54,185x = 2,266,666,418.29
  5. Step 5: Solve for x
    x = 2,266,666,418.29/54,185
  6. Step 6: Final answer
    x = 41,831.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.