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Finding the Fourth Proportional to 89,686.60, 134,546.10 and 45,201.40

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Solution

The fourth proportional to 89,686.60, 134,546.10 and 45,201.40 is: 67,810.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,686.60 : 134,546.10 = 45,201.40 : x
  2. Step 2: Convert to fraction form
    89,686.60/134,546.10 = 45,201.40/x
  3. Step 3: Cross multiply
    89,686.60x = 134,546.10 × 45,201.40
  4. Step 4: Simplify right side
    89,686.60x = 6,081,672,084.54
  5. Step 5: Solve for x
    x = 6,081,672,084.54/89,686.60
  6. Step 6: Final answer
    x = 67,810.26

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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.