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Finding the Fourth Proportional to 72,673.36, 100,289.76 and 40,841.44

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Solution

The fourth proportional to 72,673.36, 100,289.76 and 40,841.44 is: 56,361.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,673.36 : 100,289.76 = 40,841.44 : x
  2. Step 2: Convert to fraction form
    72,673.36/100,289.76 = 40,841.44/x
  3. Step 3: Cross multiply
    72,673.36x = 100,289.76 × 40,841.44
  4. Step 4: Simplify right side
    72,673.36x = 4,095,978,215.65
  5. Step 5: Solve for x
    x = 4,095,978,215.65/72,673.36
  6. Step 6: Final answer
    x = 56,361.48

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1.5x scale

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.