Home / 72,439,765.20-108,664,896.60-43,623,853.20

Finding the Fourth Proportional to 72,439,765.20, 108,664,896.60 and 43,623,853.20

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Solution

The fourth proportional to 72,439,765.20, 108,664,896.60 and 43,623,853.20 is: 65,438,940.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439,765.20 : 108,664,896.60 = 43,623,853.20 : x
  2. Step 2: Convert to fraction form
    72,439,765.20/108,664,896.60 = 43,623,853.20/x
  3. Step 3: Cross multiply
    72,439,765.20x = 108,664,896.60 × 43,623,853.20
  4. Step 4: Simplify right side
    72,439,765.20x = 4,740,381,497,271,579
  5. Step 5: Solve for x
    x = 4,740,381,497,271,579/72,439,765.20
  6. Step 6: Final answer
    x = 65,438,940.67

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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.