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Finding the Fourth Proportional to 54,109.60, 74,669.84 and 30,236.40

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Solution

The fourth proportional to 54,109.60, 74,669.84 and 30,236.40 is: 41,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,109.60 : 74,669.84 = 30,236.40 : x
  2. Step 2: Convert to fraction form
    54,109.60/74,669.84 = 30,236.40/x
  3. Step 3: Cross multiply
    54,109.60x = 74,669.84 × 30,236.40
  4. Step 4: Simplify right side
    54,109.60x = 2,257,747,150.18
  5. Step 5: Solve for x
    x = 2,257,747,150.18/54,109.60
  6. Step 6: Final answer
    x = 41,725.45

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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.