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Finding the Fourth Proportional to 72,337.36, 99,824.44 and 40,507.44

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Solution

The fourth proportional to 72,337.36, 99,824.44 and 40,507.44 is: 55,899.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,337.36 : 99,824.44 = 40,507.44 : x
  2. Step 2: Convert to fraction form
    72,337.36/99,824.44 = 40,507.44/x
  3. Step 3: Cross multiply
    72,337.36x = 99,824.44 × 40,507.44
  4. Step 4: Simplify right side
    72,337.36x = 4,043,632,513.83
  5. Step 5: Solve for x
    x = 4,043,632,513.83/72,337.36
  6. Step 6: Final answer
    x = 55,899.64

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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.