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Finding the Fourth Proportional to 60,907.58, 91,371.21 and 18,777.80

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Solution

The fourth proportional to 60,907.58, 91,371.21 and 18,777.80 is: 28,169.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,907.58 : 91,371.21 = 18,777.80 : x
  2. Step 2: Convert to fraction form
    60,907.58/91,371.21 = 18,777.80/x
  3. Step 3: Cross multiply
    60,907.58x = 91,371.21 × 18,777.80
  4. Step 4: Simplify right side
    60,907.58x = 1,715,749,850.28
  5. Step 5: Solve for x
    x = 1,715,749,850.28/60,907.58
  6. Step 6: Final answer
    x = 28,169.73

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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.