Home / 72,439,635.20-108,664,701.60-43,623,723.20

Finding the Fourth Proportional to 72,439,635.20, 108,664,701.60 and 43,623,723.20

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Solution

The fourth proportional to 72,439,635.20, 108,664,701.60 and 43,623,723.20 is: 65,438,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439,635.20 : 108,664,701.60 = 43,623,723.20 : x
  2. Step 2: Convert to fraction form
    72,439,635.20/108,664,701.60 = 43,623,723.20/x
  3. Step 3: Cross multiply
    72,439,635.20x = 108,664,701.60 × 43,623,723.20
  4. Step 4: Simplify right side
    72,439,635.20x = 4,740,358,864,208,997
  5. Step 5: Solve for x
    x = 4,740,358,864,208,997/72,439,635.20
  6. Step 6: Final answer
    x = 65,438,745.67

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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.