Home / 40,845.60-61,268.40-20,109.60

Finding the Fourth Proportional to 40,845.60, 61,268.40 and 20,109.60

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Solution

The fourth proportional to 40,845.60, 61,268.40 and 20,109.60 is: 30,164.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,845.60 : 61,268.40 = 20,109.60 : x
  2. Step 2: Convert to fraction form
    40,845.60/61,268.40 = 20,109.60/x
  3. Step 3: Cross multiply
    40,845.60x = 61,268.40 × 20,109.60
  4. Step 4: Simplify right side
    40,845.60x = 1,232,083,016.64
  5. Step 5: Solve for x
    x = 1,232,083,016.64/40,845.60
  6. Step 6: Final answer
    x = 30,164.40

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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.