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Finding the Fourth Proportional to 54,860.82, 81,809.51 and 54,361.86

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Solution

The fourth proportional to 54,860.82, 81,809.51 and 54,361.86 is: 81,065.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,860.82 : 81,809.51 = 54,361.86 : x
  2. Step 2: Convert to fraction form
    54,860.82/81,809.51 = 54,361.86/x
  3. Step 3: Cross multiply
    54,860.82x = 81,809.51 × 54,361.86
  4. Step 4: Simplify right side
    54,860.82x = 4,447,316,857.48
  5. Step 5: Solve for x
    x = 4,447,316,857.48/54,860.82
  6. Step 6: Final answer
    x = 81,065.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.