Home / 72,489,942.40-108,734,913.60-40,241,315.20

Finding the Fourth Proportional to 72,489,942.40, 108,734,913.60 and 40,241,315.20

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Solution

The fourth proportional to 72,489,942.40, 108,734,913.60 and 40,241,315.20 is: 60,361,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,489,942.40 : 108,734,913.60 = 40,241,315.20 : x
  2. Step 2: Convert to fraction form
    72,489,942.40/108,734,913.60 = 40,241,315.20/x
  3. Step 3: Cross multiply
    72,489,942.40x = 108,734,913.60 × 40,241,315.20
  4. Step 4: Simplify right side
    72,489,942.40x = 4,375,635,931,422,367
  5. Step 5: Solve for x
    x = 4,375,635,931,422,367/72,489,942.40
  6. Step 6: Final answer
    x = 60,361,972.80

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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.