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Finding the Fourth Proportional to 89,450.40, 134,060.40 and 68,570.40

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Solution

The fourth proportional to 89,450.40, 134,060.40 and 68,570.40 is: 102,767.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,450.40 : 134,060.40 = 68,570.40 : x
  2. Step 2: Convert to fraction form
    89,450.40/134,060.40 = 68,570.40/x
  3. Step 3: Cross multiply
    89,450.40x = 134,060.40 × 68,570.40
  4. Step 4: Simplify right side
    89,450.40x = 9,192,575,252.16
  5. Step 5: Solve for x
    x = 9,192,575,252.16/89,450.40
  6. Step 6: Final answer
    x = 102,767.29

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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.