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Finding the Fourth Proportional to 103,745.25, 155,657.10 and 40,610.50

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Solution

The fourth proportional to 103,745.25, 155,657.10 and 40,610.50 is: 60,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,745.25 : 155,657.10 = 40,610.50 : x
  2. Step 2: Convert to fraction form
    103,745.25/155,657.10 = 40,610.50/x
  3. Step 3: Cross multiply
    103,745.25x = 155,657.10 × 40,610.50
  4. Step 4: Simplify right side
    103,745.25x = 6,321,312,270.41
  5. Step 5: Solve for x
    x = 6,321,312,270.41/103,745.25
  6. Step 6: Final answer
    x = 60,931.10

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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.