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Finding the Fourth Proportional to 72,571.01, 100,142.46 and 40,733.69

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Solution

The fourth proportional to 72,571.01, 100,142.46 and 40,733.69 is: 56,209.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,571.01 : 100,142.46 = 40,733.69 : x
  2. Step 2: Convert to fraction form
    72,571.01/100,142.46 = 40,733.69/x
  3. Step 3: Cross multiply
    72,571.01x = 100,142.46 × 40,733.69
  4. Step 4: Simplify right side
    72,571.01x = 4,079,171,420.77
  5. Step 5: Solve for x
    x = 4,079,171,420.77/72,571.01
  6. Step 6: Final answer
    x = 56,209.38

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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.