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Finding the Fourth Proportional to 52,640.38, 72,640.64 and 28,767.24

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Solution

The fourth proportional to 52,640.38, 72,640.64 and 28,767.24 is: 39,697.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,640.38 : 72,640.64 = 28,767.24 : x
  2. Step 2: Convert to fraction form
    52,640.38/72,640.64 = 28,767.24/x
  3. Step 3: Cross multiply
    52,640.38x = 72,640.64 × 28,767.24
  4. Step 4: Simplify right side
    52,640.38x = 2,089,670,724.63
  5. Step 5: Solve for x
    x = 2,089,670,724.63/52,640.38
  6. Step 6: Final answer
    x = 39,697.11

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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.