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Finding the Fourth Proportional to 34,840.80, 52,390.80 and 29,138.40

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Solution

The fourth proportional to 34,840.80, 52,390.80 and 29,138.40 is: 43,815.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,840.80 : 52,390.80 = 29,138.40 : x
  2. Step 2: Convert to fraction form
    34,840.80/52,390.80 = 29,138.40/x
  3. Step 3: Cross multiply
    34,840.80x = 52,390.80 × 29,138.40
  4. Step 4: Simplify right side
    34,840.80x = 1,526,584,086.72
  5. Step 5: Solve for x
    x = 1,526,584,086.72/34,840.80
  6. Step 6: Final answer
    x = 43,815.99

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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.