Home / 45,433.94-68,128.31-28,781.35

Finding the Fourth Proportional to 45,433.94, 68,128.31 and 28,781.35

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Solution

The fourth proportional to 45,433.94, 68,128.31 and 28,781.35 is: 43,157.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,433.94 : 68,128.31 = 28,781.35 : x
  2. Step 2: Convert to fraction form
    45,433.94/68,128.31 = 28,781.35/x
  3. Step 3: Cross multiply
    45,433.94x = 68,128.31 × 28,781.35
  4. Step 4: Simplify right side
    45,433.94x = 1,960,824,636.65
  5. Step 5: Solve for x
    x = 1,960,824,636.65/45,433.94
  6. Step 6: Final answer
    x = 43,157.71

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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.