Home / 85,603,632.75-128,378,476.08-28,082,500.11

Finding the Fourth Proportional to 85,603,632.75, 128,378,476.08 and 28,082,500.11

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Solution

The fourth proportional to 85,603,632.75, 128,378,476.08 and 28,082,500.11 is: 42,114,901.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603,632.75 : 128,378,476.08 = 28,082,500.11 : x
  2. Step 2: Convert to fraction form
    85,603,632.75/128,378,476.08 = 28,082,500.11/x
  3. Step 3: Cross multiply
    85,603,632.75x = 128,378,476.08 × 28,082,500.11
  4. Step 4: Simplify right side
    85,603,632.75x = 3,605,188,568,638,232
  5. Step 5: Solve for x
    x = 3,605,188,568,638,232/85,603,632.75
  6. Step 6: Final answer
    x = 42,114,901.59

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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.