Home / 72,485,217.43-100,029,616.34-39,890,169.43

Finding the Fourth Proportional to 72,485,217.43, 100,029,616.34 and 39,890,169.43

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Solution

The fourth proportional to 72,485,217.43, 100,029,616.34 and 39,890,169.43 is: 55,048,442.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,485,217.43 : 100,029,616.34 = 39,890,169.43 : x
  2. Step 2: Convert to fraction form
    72,485,217.43/100,029,616.34 = 39,890,169.43/x
  3. Step 3: Cross multiply
    72,485,217.43x = 100,029,616.34 × 39,890,169.43
  4. Step 4: Simplify right side
    72,485,217.43x = 3,990,198,343,370,971.50
  5. Step 5: Solve for x
    x = 3,990,198,343,370,971.50/72,485,217.43
  6. Step 6: Final answer
    x = 55,048,442.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.