Home / 90,745.10-136,145.33-46,403

Finding the Fourth Proportional to 90,745.10, 136,145.33 and 46,403

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Solution

The fourth proportional to 90,745.10, 136,145.33 and 46,403 is: 69,618.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,745.10 : 136,145.33 = 46,403 : x
  2. Step 2: Convert to fraction form
    90,745.10/136,145.33 = 46,403/x
  3. Step 3: Cross multiply
    90,745.10x = 136,145.33 × 46,403
  4. Step 4: Simplify right side
    90,745.10x = 6,317,551,747.99
  5. Step 5: Solve for x
    x = 6,317,551,747.99/90,745.10
  6. Step 6: Final answer
    x = 69,618.65

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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.