Home / 72,485,221.19-100,029,621.51-39,890,173.19

Finding the Fourth Proportional to 72,485,221.19, 100,029,621.51 and 39,890,173.19

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Solution

The fourth proportional to 72,485,221.19, 100,029,621.51 and 39,890,173.19 is: 55,048,447.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,485,221.19 : 100,029,621.51 = 39,890,173.19 : x
  2. Step 2: Convert to fraction form
    72,485,221.19/100,029,621.51 = 39,890,173.19/x
  3. Step 3: Cross multiply
    72,485,221.19x = 100,029,621.51 × 39,890,173.19
  4. Step 4: Simplify right side
    72,485,221.19x = 3,990,198,925,663,901.50
  5. Step 5: Solve for x
    x = 3,990,198,925,663,901.50/72,485,221.19
  6. Step 6: Final answer
    x = 55,048,447.95

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