Home / 40,128.60-55,377.46-22,223.68

Finding the Fourth Proportional to 40,128.60, 55,377.46 and 22,223.68

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Solution

The fourth proportional to 40,128.60, 55,377.46 and 22,223.68 is: 30,668.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,128.60 : 55,377.46 = 22,223.68 : x
  2. Step 2: Convert to fraction form
    40,128.60/55,377.46 = 22,223.68/x
  3. Step 3: Cross multiply
    40,128.60x = 55,377.46 × 22,223.68
  4. Step 4: Simplify right side
    40,128.60x = 1,230,690,886.21
  5. Step 5: Solve for x
    x = 1,230,690,886.21/40,128.60
  6. Step 6: Final answer
    x = 30,668.67

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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.