Home / 43,685.55-65,517.49-18,722.77

Finding the Fourth Proportional to 43,685.55, 65,517.49 and 18,722.77

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Solution

The fourth proportional to 43,685.55, 65,517.49 and 18,722.77 is: 28,079.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,685.55 : 65,517.49 = 18,722.77 : x
  2. Step 2: Convert to fraction form
    43,685.55/65,517.49 = 18,722.77/x
  3. Step 3: Cross multiply
    43,685.55x = 65,517.49 × 18,722.77
  4. Step 4: Simplify right side
    43,685.55x = 1,226,668,896.25
  5. Step 5: Solve for x
    x = 1,226,668,896.25/43,685.55
  6. Step 6: Final answer
    x = 28,079.51

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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.