Home / 46,128.21-69,138.55-21,170.89

Finding the Fourth Proportional to 46,128.21, 69,138.55 and 21,170.89

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Solution

The fourth proportional to 46,128.21, 69,138.55 and 21,170.89 is: 31,731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,128.21 : 69,138.55 = 21,170.89 : x
  2. Step 2: Convert to fraction form
    46,128.21/69,138.55 = 21,170.89/x
  3. Step 3: Cross multiply
    46,128.21x = 69,138.55 × 21,170.89
  4. Step 4: Simplify right side
    46,128.21x = 1,463,724,530.96
  5. Step 5: Solve for x
    x = 1,463,724,530.96/46,128.21
  6. Step 6: Final answer
    x = 31,731.66

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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.