Home / 72,954.32-100,676.84-39,420.24

Finding the Fourth Proportional to 72,954.32, 100,676.84 and 39,420.24

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Solution

The fourth proportional to 72,954.32, 100,676.84 and 39,420.24 is: 54,399.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,954.32 : 100,676.84 = 39,420.24 : x
  2. Step 2: Convert to fraction form
    72,954.32/100,676.84 = 39,420.24/x
  3. Step 3: Cross multiply
    72,954.32x = 100,676.84 × 39,420.24
  4. Step 4: Simplify right side
    72,954.32x = 3,968,705,195.24
  5. Step 5: Solve for x
    x = 3,968,705,195.24/72,954.32
  6. Step 6: Final answer
    x = 54,399.87

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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.