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Finding the Fourth Proportional to 72,739.62, 100,152.45 and 66,096.81

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Solution

The fourth proportional to 72,739.62, 100,152.45 and 66,096.81 is: 91,006.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,739.62 : 100,152.45 = 66,096.81 : x
  2. Step 2: Convert to fraction form
    72,739.62/100,152.45 = 66,096.81/x
  3. Step 3: Cross multiply
    72,739.62x = 100,152.45 × 66,096.81
  4. Step 4: Simplify right side
    72,739.62x = 6,619,757,458.68
  5. Step 5: Solve for x
    x = 6,619,757,458.68/72,739.62
  6. Step 6: Final answer
    x = 91,006.21

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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.