Home / 72,485,229.02-100,029,632.39-39,890,181.02

Finding the Fourth Proportional to 72,485,229.02, 100,029,632.39 and 39,890,181.02

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Solution

The fourth proportional to 72,485,229.02, 100,029,632.39 and 39,890,181.02 is: 55,048,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,485,229.02 : 100,029,632.39 = 39,890,181.02 : x
  2. Step 2: Convert to fraction form
    72,485,229.02/100,029,632.39 = 39,890,181.02/x
  3. Step 3: Cross multiply
    72,485,229.02x = 100,029,632.39 × 39,890,181.02
  4. Step 4: Simplify right side
    72,485,229.02x = 3,990,200,142,701,556.50
  5. Step 5: Solve for x
    x = 3,990,200,142,701,556.50/72,485,229.02
  6. Step 6: Final answer
    x = 55,048,458.80

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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.