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Finding the Fourth Proportional to 38,681.75, 58,076.53 and 19,975.31

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Solution

The fourth proportional to 38,681.75, 58,076.53 and 19,975.31 is: 29,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,681.75 : 58,076.53 = 19,975.31 : x
  2. Step 2: Convert to fraction form
    38,681.75/58,076.53 = 19,975.31/x
  3. Step 3: Cross multiply
    38,681.75x = 58,076.53 × 19,975.31
  4. Step 4: Simplify right side
    38,681.75x = 1,160,096,567.94
  5. Step 5: Solve for x
    x = 1,160,096,567.94/38,681.75
  6. Step 6: Final answer
    x = 29,990.80

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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.