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Finding the Fourth Proportional to 89,872.22, 134,679.87 and 65,992.40

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Solution

The fourth proportional to 89,872.22, 134,679.87 and 65,992.40 is: 98,894.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,872.22 : 134,679.87 = 65,992.40 : x
  2. Step 2: Convert to fraction form
    89,872.22/134,679.87 = 65,992.40/x
  3. Step 3: Cross multiply
    89,872.22x = 134,679.87 × 65,992.40
  4. Step 4: Simplify right side
    89,872.22x = 8,887,847,852.99
  5. Step 5: Solve for x
    x = 8,887,847,852.99/89,872.22
  6. Step 6: Final answer
    x = 98,894.27

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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.