Home / 40,379.68-55,711.26-28,449.60

Finding the Fourth Proportional to 40,379.68, 55,711.26 and 28,449.60

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Solution

The fourth proportional to 40,379.68, 55,711.26 and 28,449.60 is: 39,251.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,379.68 : 55,711.26 = 28,449.60 : x
  2. Step 2: Convert to fraction form
    40,379.68/55,711.26 = 28,449.60/x
  3. Step 3: Cross multiply
    40,379.68x = 55,711.26 × 28,449.60
  4. Step 4: Simplify right side
    40,379.68x = 1,584,963,062.50
  5. Step 5: Solve for x
    x = 1,584,963,062.50/40,379.68
  6. Step 6: Final answer
    x = 39,251.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.