Home / 85,603,768.88-128,378,679.77-28,082,636.24

Finding the Fourth Proportional to 85,603,768.88, 128,378,679.77 and 28,082,636.24

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Solution

The fourth proportional to 85,603,768.88, 128,378,679.77 and 28,082,636.24 is: 42,115,105.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603,768.88 : 128,378,679.77 = 28,082,636.24 : x
  2. Step 2: Convert to fraction form
    85,603,768.88/128,378,679.77 = 28,082,636.24/x
  3. Step 3: Cross multiply
    85,603,768.88x = 128,378,679.77 × 28,082,636.24
  4. Step 4: Simplify right side
    85,603,768.88x = 3,605,211,764,380,670
  5. Step 5: Solve for x
    x = 3,605,211,764,380,670/85,603,768.88
  6. Step 6: Final answer
    x = 42,115,105.58

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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.