Home / 72,698.04-100,322.82-40,867.20

Finding the Fourth Proportional to 72,698.04, 100,322.82 and 40,867.20

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Solution

The fourth proportional to 72,698.04, 100,322.82 and 40,867.20 is: 56,396.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,698.04 : 100,322.82 = 40,867.20 : x
  2. Step 2: Convert to fraction form
    72,698.04/100,322.82 = 40,867.20/x
  3. Step 3: Cross multiply
    72,698.04x = 100,322.82 × 40,867.20
  4. Step 4: Simplify right side
    72,698.04x = 4,099,912,749.50
  5. Step 5: Solve for x
    x = 4,099,912,749.50/72,698.04
  6. Step 6: Final answer
    x = 56,396.47

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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.