Home / 45,505.96-68,145-28,815.64

Finding the Fourth Proportional to 45,505.96, 68,145 and 28,815.64

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Solution

The fourth proportional to 45,505.96, 68,145 and 28,815.64 is: 43,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,505.96 : 68,145 = 28,815.64 : x
  2. Step 2: Convert to fraction form
    45,505.96/68,145 = 28,815.64/x
  3. Step 3: Cross multiply
    45,505.96x = 68,145 × 28,815.64
  4. Step 4: Simplify right side
    45,505.96x = 1,963,641,787.80
  5. Step 5: Solve for x
    x = 1,963,641,787.80/45,505.96
  6. Step 6: Final answer
    x = 43,151.31

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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.