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Finding the Fourth Proportional to 54,355.38, 74,984.82 and 38,448.60

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Solution

The fourth proportional to 54,355.38, 74,984.82 and 38,448.60 is: 53,040.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,355.38 : 74,984.82 = 38,448.60 : x
  2. Step 2: Convert to fraction form
    54,355.38/74,984.82 = 38,448.60/x
  3. Step 3: Cross multiply
    54,355.38x = 74,984.82 × 38,448.60
  4. Step 4: Simplify right side
    54,355.38x = 2,883,061,350.25
  5. Step 5: Solve for x
    x = 2,883,061,350.25/54,355.38
  6. Step 6: Final answer
    x = 53,040.96

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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.