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Finding the Fourth Proportional to 81,361.88, 112,283.56 and 45,549.75

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Solution

The fourth proportional to 81,361.88, 112,283.56 and 45,549.75 is: 62,860.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,361.88 : 112,283.56 = 45,549.75 : x
  2. Step 2: Convert to fraction form
    81,361.88/112,283.56 = 45,549.75/x
  3. Step 3: Cross multiply
    81,361.88x = 112,283.56 × 45,549.75
  4. Step 4: Simplify right side
    81,361.88x = 5,114,488,087.11
  5. Step 5: Solve for x
    x = 5,114,488,087.11/81,361.88
  6. Step 6: Final answer
    x = 62,860.99

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1.5x scale

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.