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Finding the Fourth Proportional to 52,639.44, 72,640.36 and 28,766.40

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Solution

The fourth proportional to 52,639.44, 72,640.36 and 28,766.40 is: 39,696.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,639.44 : 72,640.36 = 28,766.40 : x
  2. Step 2: Convert to fraction form
    52,639.44/72,640.36 = 28,766.40/x
  3. Step 3: Cross multiply
    52,639.44x = 72,640.36 × 28,766.40
  4. Step 4: Simplify right side
    52,639.44x = 2,089,601,651.90
  5. Step 5: Solve for x
    x = 2,089,601,651.90/52,639.44
  6. Step 6: Final answer
    x = 39,696.50

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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.