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Finding the Fourth Proportional to 103,040.60, 154,487.10 and 39,806.60

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Solution

The fourth proportional to 103,040.60, 154,487.10 and 39,806.60 is: 59,681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,040.60 : 154,487.10 = 39,806.60 : x
  2. Step 2: Convert to fraction form
    103,040.60/154,487.10 = 39,806.60/x
  3. Step 3: Cross multiply
    103,040.60x = 154,487.10 × 39,806.60
  4. Step 4: Simplify right side
    103,040.60x = 6,149,606,194.86
  5. Step 5: Solve for x
    x = 6,149,606,194.86/103,040.60
  6. Step 6: Final answer
    x = 59,681.39

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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.