Home / 72,135.30-99,529.62-41,902.65

Finding the Fourth Proportional to 72,135.30, 99,529.62 and 41,902.65

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Solution

The fourth proportional to 72,135.30, 99,529.62 and 41,902.65 is: 57,815.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,135.30 : 99,529.62 = 41,902.65 : x
  2. Step 2: Convert to fraction form
    72,135.30/99,529.62 = 41,902.65/x
  3. Step 3: Cross multiply
    72,135.30x = 99,529.62 × 41,902.65
  4. Step 4: Simplify right side
    72,135.30x = 4,170,554,831.49
  5. Step 5: Solve for x
    x = 4,170,554,831.49/72,135.30
  6. Step 6: Final answer
    x = 57,815.73

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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.