Home / 78,040,246.50-117,035,558.55-72,945,486.18

Finding the Fourth Proportional to 78,040,246.50, 117,035,558.55 and 72,945,486.18

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Solution

The fourth proportional to 78,040,246.50, 117,035,558.55 and 72,945,486.18 is: 109,395,037.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,040,246.50 : 117,035,558.55 = 72,945,486.18 : x
  2. Step 2: Convert to fraction form
    78,040,246.50/117,035,558.55 = 72,945,486.18/x
  3. Step 3: Cross multiply
    78,040,246.50x = 117,035,558.55 × 72,945,486.18
  4. Step 4: Simplify right side
    78,040,246.50x = 8,537,215,718,777,606
  5. Step 5: Solve for x
    x = 8,537,215,718,777,606/78,040,246.50
  6. Step 6: Final answer
    x = 109,395,037.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.