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Finding the Fourth Proportional to 40,295.60, 55,609.60 and 22,390.75

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Solution

The fourth proportional to 40,295.60, 55,609.60 and 22,390.75 is: 30,900.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,295.60 : 55,609.60 = 22,390.75 : x
  2. Step 2: Convert to fraction form
    40,295.60/55,609.60 = 22,390.75/x
  3. Step 3: Cross multiply
    40,295.60x = 55,609.60 × 22,390.75
  4. Step 4: Simplify right side
    40,295.60x = 1,245,140,651.20
  5. Step 5: Solve for x
    x = 1,245,140,651.20/40,295.60
  6. Step 6: Final answer
    x = 30,900.16

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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.