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Finding the Fourth Proportional to 72,527.78, 100,086.73 and 40,260.49

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Solution

The fourth proportional to 72,527.78, 100,086.73 and 40,260.49 is: 55,558.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,527.78 : 100,086.73 = 40,260.49 : x
  2. Step 2: Convert to fraction form
    72,527.78/100,086.73 = 40,260.49/x
  3. Step 3: Cross multiply
    72,527.78x = 100,086.73 × 40,260.49
  4. Step 4: Simplify right side
    72,527.78x = 4,029,540,792.30
  5. Step 5: Solve for x
    x = 4,029,540,792.30/72,527.78
  6. Step 6: Final answer
    x = 55,558.58

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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.