Home / 43,811.90-65,740.80-20,126.60

Finding the Fourth Proportional to 43,811.90, 65,740.80 and 20,126.60

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Solution

The fourth proportional to 43,811.90, 65,740.80 and 20,126.60 is: 30,200.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,811.90 : 65,740.80 = 20,126.60 : x
  2. Step 2: Convert to fraction form
    43,811.90/65,740.80 = 20,126.60/x
  3. Step 3: Cross multiply
    43,811.90x = 65,740.80 × 20,126.60
  4. Step 4: Simplify right side
    43,811.90x = 1,323,138,785.28
  5. Step 5: Solve for x
    x = 1,323,138,785.28/43,811.90
  6. Step 6: Final answer
    x = 30,200.44

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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.