Home / 72,704.45-100,331.16-40,873.34

Finding the Fourth Proportional to 72,704.45, 100,331.16 and 40,873.34

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Solution

The fourth proportional to 72,704.45, 100,331.16 and 40,873.34 is: 56,404.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,704.45 : 100,331.16 = 40,873.34 : x
  2. Step 2: Convert to fraction form
    72,704.45/100,331.16 = 40,873.34/x
  3. Step 3: Cross multiply
    72,704.45x = 100,331.16 × 40,873.34
  4. Step 4: Simplify right side
    72,704.45x = 4,100,869,866.10
  5. Step 5: Solve for x
    x = 4,100,869,866.10/72,704.45
  6. Step 6: Final answer
    x = 56,404.66

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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.