Home / 54,731.18-81,936.81-49,478.28

Finding the Fourth Proportional to 54,731.18, 81,936.81 and 49,478.28

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Solution

The fourth proportional to 54,731.18, 81,936.81 and 49,478.28 is: 74,072.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,731.18 : 81,936.81 = 49,478.28 : x
  2. Step 2: Convert to fraction form
    54,731.18/81,936.81 = 49,478.28/x
  3. Step 3: Cross multiply
    54,731.18x = 81,936.81 × 49,478.28
  4. Step 4: Simplify right side
    54,731.18x = 4,054,092,427.49
  5. Step 5: Solve for x
    x = 4,054,092,427.49/54,731.18
  6. Step 6: Final answer
    x = 74,072.82

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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.