Home / 72,485,242.65-100,029,651.35-39,890,194.65

Finding the Fourth Proportional to 72,485,242.65, 100,029,651.35 and 39,890,194.65

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Solution

The fourth proportional to 72,485,242.65, 100,029,651.35 and 39,890,194.65 is: 55,048,477.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,485,242.65 : 100,029,651.35 = 39,890,194.65 : x
  2. Step 2: Convert to fraction form
    72,485,242.65/100,029,651.35 = 39,890,194.65/x
  3. Step 3: Cross multiply
    72,485,242.65x = 100,029,651.35 × 39,890,194.65
  4. Step 4: Simplify right side
    72,485,242.65x = 3,990,202,262,923,684
  5. Step 5: Solve for x
    x = 3,990,202,262,923,684/72,485,242.65
  6. Step 6: Final answer
    x = 55,048,477.69

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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.