Home / 72,540.32-100,106.23-40,716.73

Finding the Fourth Proportional to 72,540.32, 100,106.23 and 40,716.73

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Solution

The fourth proportional to 72,540.32, 100,106.23 and 40,716.73 is: 56,189.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,540.32 : 100,106.23 = 40,716.73 : x
  2. Step 2: Convert to fraction form
    72,540.32/100,106.23 = 40,716.73/x
  3. Step 3: Cross multiply
    72,540.32x = 100,106.23 × 40,716.73
  4. Step 4: Simplify right side
    72,540.32x = 4,075,997,837.70
  5. Step 5: Solve for x
    x = 4,075,997,837.70/72,540.32
  6. Step 6: Final answer
    x = 56,189.41

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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.