Home / 66,815.44-100,242.36-31,706.80

Finding the Fourth Proportional to 66,815.44, 100,242.36 and 31,706.80

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Solution

The fourth proportional to 66,815.44, 100,242.36 and 31,706.80 is: 47,569.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,815.44 : 100,242.36 = 31,706.80 : x
  2. Step 2: Convert to fraction form
    66,815.44/100,242.36 = 31,706.80/x
  3. Step 3: Cross multiply
    66,815.44x = 100,242.36 × 31,706.80
  4. Step 4: Simplify right side
    66,815.44x = 3,178,364,460.05
  5. Step 5: Solve for x
    x = 3,178,364,460.05/66,815.44
  6. Step 6: Final answer
    x = 47,569.31

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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.