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Finding the Fourth Proportional to 89,546.40, 134,319.60 and 36,938.40

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Solution

The fourth proportional to 89,546.40, 134,319.60 and 36,938.40 is: 55,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,546.40 : 134,319.60 = 36,938.40 : x
  2. Step 2: Convert to fraction form
    89,546.40/134,319.60 = 36,938.40/x
  3. Step 3: Cross multiply
    89,546.40x = 134,319.60 × 36,938.40
  4. Step 4: Simplify right side
    89,546.40x = 4,961,551,112.64
  5. Step 5: Solve for x
    x = 4,961,551,112.64/89,546.40
  6. Step 6: Final answer
    x = 55,407.60

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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.