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Finding the Fourth Proportional to 73,136, 100,932 and 41,308.40

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Solution

The fourth proportional to 73,136, 100,932 and 41,308.40 is: 57,008.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,136 : 100,932 = 41,308.40 : x
  2. Step 2: Convert to fraction form
    73,136/100,932 = 41,308.40/x
  3. Step 3: Cross multiply
    73,136x = 100,932 × 41,308.40
  4. Step 4: Simplify right side
    73,136x = 4,169,339,428.80
  5. Step 5: Solve for x
    x = 4,169,339,428.80/73,136
  6. Step 6: Final answer
    x = 57,008.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.