Home / 81,986.53-113,173.15-64,087.30

Finding the Fourth Proportional to 81,986.53, 113,173.15 and 64,087.30

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Solution

The fourth proportional to 81,986.53, 113,173.15 and 64,087.30 is: 88,465.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,986.53 : 113,173.15 = 64,087.30 : x
  2. Step 2: Convert to fraction form
    81,986.53/113,173.15 = 64,087.30/x
  3. Step 3: Cross multiply
    81,986.53x = 113,173.15 × 64,087.30
  4. Step 4: Simplify right side
    81,986.53x = 7,252,961,717.41
  5. Step 5: Solve for x
    x = 7,252,961,717.41/81,986.53
  6. Step 6: Final answer
    x = 88,465.29

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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.