Home / 45,288.99-67,907.57-18,971.55

Finding the Fourth Proportional to 45,288.99, 67,907.57 and 18,971.55

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Solution

The fourth proportional to 45,288.99, 67,907.57 and 18,971.55 is: 28,446.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,288.99 : 67,907.57 = 18,971.55 : x
  2. Step 2: Convert to fraction form
    45,288.99/67,907.57 = 18,971.55/x
  3. Step 3: Cross multiply
    45,288.99x = 67,907.57 × 18,971.55
  4. Step 4: Simplify right side
    45,288.99x = 1,288,311,764.78
  5. Step 5: Solve for x
    x = 1,288,311,764.78/45,288.99
  6. Step 6: Final answer
    x = 28,446.47

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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.