Home / 78,560.45-117,840.91-19,396.12

Finding the Fourth Proportional to 78,560.45, 117,840.91 and 19,396.12

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Solution

The fourth proportional to 78,560.45, 117,840.91 and 19,396.12 is: 29,094.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,560.45 : 117,840.91 = 19,396.12 : x
  2. Step 2: Convert to fraction form
    78,560.45/117,840.91 = 19,396.12/x
  3. Step 3: Cross multiply
    78,560.45x = 117,840.91 × 19,396.12
  4. Step 4: Simplify right side
    78,560.45x = 2,285,656,431.27
  5. Step 5: Solve for x
    x = 2,285,656,431.27/78,560.45
  6. Step 6: Final answer
    x = 29,094.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.