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Finding the Fourth Proportional to 72,950.51, 100,696.84 and 42,745.61

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Solution

The fourth proportional to 72,950.51, 100,696.84 and 42,745.61 is: 59,003.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,950.51 : 100,696.84 = 42,745.61 : x
  2. Step 2: Convert to fraction form
    72,950.51/100,696.84 = 42,745.61/x
  3. Step 3: Cross multiply
    72,950.51x = 100,696.84 × 42,745.61
  4. Step 4: Simplify right side
    72,950.51x = 4,304,347,995.75
  5. Step 5: Solve for x
    x = 4,304,347,995.75/72,950.51
  6. Step 6: Final answer
    x = 59,003.67

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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.