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Finding the Fourth Proportional to 35,319.75, 48,745.58 and 20,415.75

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Solution

The fourth proportional to 35,319.75, 48,745.58 and 20,415.75 is: 28,176.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,319.75 : 48,745.58 = 20,415.75 : x
  2. Step 2: Convert to fraction form
    35,319.75/48,745.58 = 20,415.75/x
  3. Step 3: Cross multiply
    35,319.75x = 48,745.58 × 20,415.75
  4. Step 4: Simplify right side
    35,319.75x = 995,177,472.81
  5. Step 5: Solve for x
    x = 995,177,472.81/35,319.75
  6. Step 6: Final answer
    x = 28,176.23

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