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Finding the Fourth Proportional to 74,653.45, 111,977.44 and 18,493.72

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Solution

The fourth proportional to 74,653.45, 111,977.44 and 18,493.72 is: 27,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,653.45 : 111,977.44 = 18,493.72 : x
  2. Step 2: Convert to fraction form
    74,653.45/111,977.44 = 18,493.72/x
  3. Step 3: Cross multiply
    74,653.45x = 111,977.44 × 18,493.72
  4. Step 4: Simplify right side
    74,653.45x = 2,070,879,095.50
  5. Step 5: Solve for x
    x = 2,070,879,095.50/74,653.45
  6. Step 6: Final answer
    x = 27,739.90

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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.