Home / 85,157.58-117,511.79-49,341.21

Finding the Fourth Proportional to 85,157.58, 117,511.79 and 49,341.21

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Solution

The fourth proportional to 85,157.58, 117,511.79 and 49,341.21 is: 68,087.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,157.58 : 117,511.79 = 49,341.21 : x
  2. Step 2: Convert to fraction form
    85,157.58/117,511.79 = 49,341.21/x
  3. Step 3: Cross multiply
    85,157.58x = 117,511.79 × 49,341.21
  4. Step 4: Simplify right side
    85,157.58x = 5,798,173,907.87
  5. Step 5: Solve for x
    x = 5,798,173,907.87/85,157.58
  6. Step 6: Final answer
    x = 68,087.58

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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.