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Finding the Fourth Proportional to 69,400.20, 104,124.60 and 29,985.60

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Solution

The fourth proportional to 69,400.20, 104,124.60 and 29,985.60 is: 44,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,400.20 : 104,124.60 = 29,985.60 : x
  2. Step 2: Convert to fraction form
    69,400.20/104,124.60 = 29,985.60/x
  3. Step 3: Cross multiply
    69,400.20x = 104,124.60 × 29,985.60
  4. Step 4: Simplify right side
    69,400.20x = 3,122,238,605.76
  5. Step 5: Solve for x
    x = 3,122,238,605.76/69,400.20
  6. Step 6: Final answer
    x = 44,988.90

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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.