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Finding the Fourth Proportional to 103,316.91, 154,975.37 and 40,987.41

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Solution

The fourth proportional to 103,316.91, 154,975.37 and 40,987.41 is: 61,481.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,316.91 : 154,975.37 = 40,987.41 : x
  2. Step 2: Convert to fraction form
    103,316.91/154,975.37 = 40,987.41/x
  3. Step 3: Cross multiply
    103,316.91x = 154,975.37 × 40,987.41
  4. Step 4: Simplify right side
    103,316.91x = 6,352,038,244.00
  5. Step 5: Solve for x
    x = 6,352,038,244.00/103,316.91
  6. Step 6: Final answer
    x = 61,481.11

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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.