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Finding the Fourth Proportional to 85,958.80, 118,665.48 and 54,176.56

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Solution

The fourth proportional to 85,958.80, 118,665.48 and 54,176.56 is: 74,790.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,958.80 : 118,665.48 = 54,176.56 : x
  2. Step 2: Convert to fraction form
    85,958.80/118,665.48 = 54,176.56/x
  3. Step 3: Cross multiply
    85,958.80x = 118,665.48 × 54,176.56
  4. Step 4: Simplify right side
    85,958.80x = 6,428,887,497.15
  5. Step 5: Solve for x
    x = 6,428,887,497.15/85,958.80
  6. Step 6: Final answer
    x = 74,790.34

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1.5x scale

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.