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Finding the Fourth Proportional to 73,438.80, 110,158.20 and 51,205.20

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Solution

The fourth proportional to 73,438.80, 110,158.20 and 51,205.20 is: 76,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,438.80 : 110,158.20 = 51,205.20 : x
  2. Step 2: Convert to fraction form
    73,438.80/110,158.20 = 51,205.20/x
  3. Step 3: Cross multiply
    73,438.80x = 110,158.20 × 51,205.20
  4. Step 4: Simplify right side
    73,438.80x = 5,640,672,662.64
  5. Step 5: Solve for x
    x = 5,640,672,662.64/73,438.80
  6. Step 6: Final answer
    x = 76,807.80

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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.