Home / 72,745,236.29-109,166,048.19-39,978,687.85

Finding the Fourth Proportional to 72,745,236.29, 109,166,048.19 and 39,978,687.85

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Solution

The fourth proportional to 72,745,236.29, 109,166,048.19 and 39,978,687.85 is: 59,994,517.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,745,236.29 : 109,166,048.19 = 39,978,687.85 : x
  2. Step 2: Convert to fraction form
    72,745,236.29/109,166,048.19 = 39,978,687.85/x
  3. Step 3: Cross multiply
    72,745,236.29x = 109,166,048.19 × 39,978,687.85
  4. Step 4: Simplify right side
    72,745,236.29x = 4,364,315,364,133,152
  5. Step 5: Solve for x
    x = 4,364,315,364,133,152/72,745,236.29
  6. Step 6: Final answer
    x = 59,994,517.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.