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Finding the Fourth Proportional to 70,666.34, 106,015.10 and 39,122.42

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Solution

The fourth proportional to 70,666.34, 106,015.10 and 39,122.42 is: 58,692.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,666.34 : 106,015.10 = 39,122.42 : x
  2. Step 2: Convert to fraction form
    70,666.34/106,015.10 = 39,122.42/x
  3. Step 3: Cross multiply
    70,666.34x = 106,015.10 × 39,122.42
  4. Step 4: Simplify right side
    70,666.34x = 4,147,566,542.85
  5. Step 5: Solve for x
    x = 4,147,566,542.85/70,666.34
  6. Step 6: Final answer
    x = 58,692.25

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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.