Home / 40,678.20-60,968.70-20,946.60

Finding the Fourth Proportional to 40,678.20, 60,968.70 and 20,946.60

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Solution

The fourth proportional to 40,678.20, 60,968.70 and 20,946.60 is: 31,394.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,678.20 : 60,968.70 = 20,946.60 : x
  2. Step 2: Convert to fraction form
    40,678.20/60,968.70 = 20,946.60/x
  3. Step 3: Cross multiply
    40,678.20x = 60,968.70 × 20,946.60
  4. Step 4: Simplify right side
    40,678.20x = 1,277,086,971.42
  5. Step 5: Solve for x
    x = 1,277,086,971.42/40,678.20
  6. Step 6: Final answer
    x = 31,394.87

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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.