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Finding the Fourth Proportional to 48,912.40, 73,174.20 and 42,410.80

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Solution

The fourth proportional to 48,912.40, 73,174.20 and 42,410.80 is: 63,447.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,912.40 : 73,174.20 = 42,410.80 : x
  2. Step 2: Convert to fraction form
    48,912.40/73,174.20 = 42,410.80/x
  3. Step 3: Cross multiply
    48,912.40x = 73,174.20 × 42,410.80
  4. Step 4: Simplify right side
    48,912.40x = 3,103,376,361.36
  5. Step 5: Solve for x
    x = 3,103,376,361.36/48,912.40
  6. Step 6: Final answer
    x = 63,447.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.