Home / 72,739.32-100,379.30-40,908.22

Finding the Fourth Proportional to 72,739.32, 100,379.30 and 40,908.22

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Solution

The fourth proportional to 72,739.32, 100,379.30 and 40,908.22 is: 56,452.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,739.32 : 100,379.30 = 40,908.22 : x
  2. Step 2: Convert to fraction form
    72,739.32/100,379.30 = 40,908.22/x
  3. Step 3: Cross multiply
    72,739.32x = 100,379.30 × 40,908.22
  4. Step 4: Simplify right side
    72,739.32x = 4,106,338,032.36
  5. Step 5: Solve for x
    x = 4,106,338,032.36/72,739.32
  6. Step 6: Final answer
    x = 56,452.80

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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.