Home / 72,738.26-100,388.48-40,913.31

Finding the Fourth Proportional to 72,738.26, 100,388.48 and 40,913.31

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Solution

The fourth proportional to 72,738.26, 100,388.48 and 40,913.31 is: 56,465.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,738.26 : 100,388.48 = 40,913.31 : x
  2. Step 2: Convert to fraction form
    72,738.26/100,388.48 = 40,913.31/x
  3. Step 3: Cross multiply
    72,738.26x = 100,388.48 × 40,913.31
  4. Step 4: Simplify right side
    72,738.26x = 4,107,224,798.10
  5. Step 5: Solve for x
    x = 4,107,224,798.10/72,738.26
  6. Step 6: Final answer
    x = 56,465.81

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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.