Home / 72,764.82-100,415.31-40,933.74

Finding the Fourth Proportional to 72,764.82, 100,415.31 and 40,933.74

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Solution

The fourth proportional to 72,764.82, 100,415.31 and 40,933.74 is: 56,488.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,764.82 : 100,415.31 = 40,933.74 : x
  2. Step 2: Convert to fraction form
    72,764.82/100,415.31 = 40,933.74/x
  3. Step 3: Cross multiply
    72,764.82x = 100,415.31 × 40,933.74
  4. Step 4: Simplify right side
    72,764.82x = 4,110,374,191.56
  5. Step 5: Solve for x
    x = 4,110,374,191.56/72,764.82
  6. Step 6: Final answer
    x = 56,488.48

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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.