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Finding the Fourth Proportional to 94,914.67, 130,978.09 and 54,629.72

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Solution

The fourth proportional to 94,914.67, 130,978.09 and 54,629.72 is: 75,386.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,914.67 : 130,978.09 = 54,629.72 : x
  2. Step 2: Convert to fraction form
    94,914.67/130,978.09 = 54,629.72/x
  3. Step 3: Cross multiply
    94,914.67x = 130,978.09 × 54,629.72
  4. Step 4: Simplify right side
    94,914.67x = 7,155,296,778.57
  5. Step 5: Solve for x
    x = 7,155,296,778.57/94,914.67
  6. Step 6: Final answer
    x = 75,386.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.