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Finding the Fourth Proportional to 72,684.76, 100,310.25 and 44,395.78

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Solution

The fourth proportional to 72,684.76, 100,310.25 and 44,395.78 is: 61,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,684.76 : 100,310.25 = 44,395.78 : x
  2. Step 2: Convert to fraction form
    72,684.76/100,310.25 = 44,395.78/x
  3. Step 3: Cross multiply
    72,684.76x = 100,310.25 × 44,395.78
  4. Step 4: Simplify right side
    72,684.76x = 4,453,351,790.75
  5. Step 5: Solve for x
    x = 4,453,351,790.75/72,684.76
  6. Step 6: Final answer
    x = 61,269.40

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1.5x scale

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.