Home / 72,338.40-99,822.24-40,500

Finding the Fourth Proportional to 72,338.40, 99,822.24 and 40,500

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Solution

The fourth proportional to 72,338.40, 99,822.24 and 40,500 is: 55,887.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,338.40 : 99,822.24 = 40,500 : x
  2. Step 2: Convert to fraction form
    72,338.40/99,822.24 = 40,500/x
  3. Step 3: Cross multiply
    72,338.40x = 99,822.24 × 40,500
  4. Step 4: Simplify right side
    72,338.40x = 4,042,800,720
  5. Step 5: Solve for x
    x = 4,042,800,720/72,338.40
  6. Step 6: Final answer
    x = 55,887.34

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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.