Home / 40,979.60-61,469.40-20,200.40

Finding the Fourth Proportional to 40,979.60, 61,469.40 and 20,200.40

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Solution

The fourth proportional to 40,979.60, 61,469.40 and 20,200.40 is: 30,300.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,979.60 : 61,469.40 = 20,200.40 : x
  2. Step 2: Convert to fraction form
    40,979.60/61,469.40 = 20,200.40/x
  3. Step 3: Cross multiply
    40,979.60x = 61,469.40 × 20,200.40
  4. Step 4: Simplify right side
    40,979.60x = 1,241,706,467.76
  5. Step 5: Solve for x
    x = 1,241,706,467.76/40,979.60
  6. Step 6: Final answer
    x = 30,300.60

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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.