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Finding the Fourth Proportional to 34,430.73, 51,629.04 and 12,240.78

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Solution

The fourth proportional to 34,430.73, 51,629.04 and 12,240.78 is: 18,355.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,430.73 : 51,629.04 = 12,240.78 : x
  2. Step 2: Convert to fraction form
    34,430.73/51,629.04 = 12,240.78/x
  3. Step 3: Cross multiply
    34,430.73x = 51,629.04 × 12,240.78
  4. Step 4: Simplify right side
    34,430.73x = 631,979,720.25
  5. Step 5: Solve for x
    x = 631,979,720.25/34,430.73
  6. Step 6: Final answer
    x = 18,355.11

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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.