Home / 72,485,222.19-100,029,622.89-39,890,174.19

Finding the Fourth Proportional to 72,485,222.19, 100,029,622.89 and 39,890,174.19

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Solution

The fourth proportional to 72,485,222.19, 100,029,622.89 and 39,890,174.19 is: 55,048,449.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,485,222.19 : 100,029,622.89 = 39,890,174.19 : x
  2. Step 2: Convert to fraction form
    72,485,222.19/100,029,622.89 = 39,890,174.19/x
  3. Step 3: Cross multiply
    72,485,222.19x = 100,029,622.89 × 39,890,174.19
  4. Step 4: Simplify right side
    72,485,222.19x = 3,990,199,081,242,111
  5. Step 5: Solve for x
    x = 3,990,199,081,242,111/72,485,222.19
  6. Step 6: Final answer
    x = 55,048,449.33

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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.