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Finding the Fourth Proportional to 34,276.80, 51,420.60 and 10,905.60

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Solution

The fourth proportional to 34,276.80, 51,420.60 and 10,905.60 is: 16,360.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,276.80 : 51,420.60 = 10,905.60 : x
  2. Step 2: Convert to fraction form
    34,276.80/51,420.60 = 10,905.60/x
  3. Step 3: Cross multiply
    34,276.80x = 51,420.60 × 10,905.60
  4. Step 4: Simplify right side
    34,276.80x = 560,772,495.36
  5. Step 5: Solve for x
    x = 560,772,495.36/34,276.80
  6. Step 6: Final answer
    x = 16,360.12

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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.