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Finding the Fourth Proportional to 72,224.52, 99,674.73 and 40,396.38

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Solution

The fourth proportional to 72,224.52, 99,674.73 and 40,396.38 is: 55,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,224.52 : 99,674.73 = 40,396.38 : x
  2. Step 2: Convert to fraction form
    72,224.52/99,674.73 = 40,396.38/x
  3. Step 3: Cross multiply
    72,224.52x = 99,674.73 × 40,396.38
  4. Step 4: Simplify right side
    72,224.52x = 4,026,498,269.48
  5. Step 5: Solve for x
    x = 4,026,498,269.48/72,224.52
  6. Step 6: Final answer
    x = 55,749.74

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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.