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Finding the Fourth Proportional to 30,351,796.80, 42,588,174.90 and 30,351,796.80

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Solution

The fourth proportional to 30,351,796.80, 42,588,174.90 and 30,351,796.80 is: 42,588,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,351,796.80 : 42,588,174.90 = 30,351,796.80 : x
  2. Step 2: Convert to fraction form
    30,351,796.80/42,588,174.90 = 30,351,796.80/x
  3. Step 3: Cross multiply
    30,351,796.80x = 42,588,174.90 × 30,351,796.80
  4. Step 4: Simplify right side
    30,351,796.80x = 1,292,627,630,647,660.25
  5. Step 5: Solve for x
    x = 1,292,627,630,647,660.25/30,351,796.80
  6. Step 6: Final answer
    x = 42,588,174.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.