Home / 85,694.08-118,257.84-47,968

Finding the Fourth Proportional to 85,694.08, 118,257.84 and 47,968

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Solution

The fourth proportional to 85,694.08, 118,257.84 and 47,968 is: 66,195.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,694.08 : 118,257.84 = 47,968 : x
  2. Step 2: Convert to fraction form
    85,694.08/118,257.84 = 47,968/x
  3. Step 3: Cross multiply
    85,694.08x = 118,257.84 × 47,968
  4. Step 4: Simplify right side
    85,694.08x = 5,672,592,069.12
  5. Step 5: Solve for x
    x = 5,672,592,069.12/85,694.08
  6. Step 6: Final answer
    x = 66,195.85

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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.