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Finding the Fourth Proportional to 72,484.37, 100,028.21 and 40,653.97

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Solution

The fourth proportional to 72,484.37, 100,028.21 and 40,653.97 is: 56,102.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,484.37 : 100,028.21 = 40,653.97 : x
  2. Step 2: Convert to fraction form
    72,484.37/100,028.21 = 40,653.97/x
  3. Step 3: Cross multiply
    72,484.37x = 100,028.21 × 40,653.97
  4. Step 4: Simplify right side
    72,484.37x = 4,066,543,348.35
  5. Step 5: Solve for x
    x = 4,066,543,348.35/72,484.37
  6. Step 6: Final answer
    x = 56,102.35

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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.