Home / 72,569.63-100,145.68-40,738.52

Finding the Fourth Proportional to 72,569.63, 100,145.68 and 40,738.52

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Solution

The fourth proportional to 72,569.63, 100,145.68 and 40,738.52 is: 56,218.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,569.63 : 100,145.68 = 40,738.52 : x
  2. Step 2: Convert to fraction form
    72,569.63/100,145.68 = 40,738.52/x
  3. Step 3: Cross multiply
    72,569.63x = 100,145.68 × 40,738.52
  4. Step 4: Simplify right side
    72,569.63x = 4,079,786,286.87
  5. Step 5: Solve for x
    x = 4,079,786,286.87/72,569.63
  6. Step 6: Final answer
    x = 56,218.92

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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.