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Finding the Fourth Proportional to 89,442.40, 134,048.40 and 68,562.40

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Solution

The fourth proportional to 89,442.40, 134,048.40 and 68,562.40 is: 102,755.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,442.40 : 134,048.40 = 68,562.40 : x
  2. Step 2: Convert to fraction form
    89,442.40/134,048.40 = 68,562.40/x
  3. Step 3: Cross multiply
    89,442.40x = 134,048.40 × 68,562.40
  4. Step 4: Simplify right side
    89,442.40x = 9,190,680,020.16
  5. Step 5: Solve for x
    x = 9,190,680,020.16/89,442.40
  6. Step 6: Final answer
    x = 102,755.29

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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.