Home / 40,368,021.46-55,780,739.98-28,745,406.78

Finding the Fourth Proportional to 40,368,021.46, 55,780,739.98 and 28,745,406.78

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Solution

The fourth proportional to 40,368,021.46, 55,780,739.98 and 28,745,406.78 is: 39,720,551.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,368,021.46 : 55,780,739.98 = 28,745,406.78 : x
  2. Step 2: Convert to fraction form
    40,368,021.46/55,780,739.98 = 28,745,406.78/x
  3. Step 3: Cross multiply
    40,368,021.46x = 55,780,739.98 × 28,745,406.78
  4. Step 4: Simplify right side
    40,368,021.46x = 1,603,440,061,214,509
  5. Step 5: Solve for x
    x = 1,603,440,061,214,509/40,368,021.46
  6. Step 6: Final answer
    x = 39,720,551.15

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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.