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Finding the Fourth Proportional to 89,549.82, 122,792.90 and 87,217.02

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Solution

The fourth proportional to 89,549.82, 122,792.90 and 87,217.02 is: 119,594.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,549.82 : 122,792.90 = 87,217.02 : x
  2. Step 2: Convert to fraction form
    89,549.82/122,792.90 = 87,217.02/x
  3. Step 3: Cross multiply
    89,549.82x = 122,792.90 × 87,217.02
  4. Step 4: Simplify right side
    89,549.82x = 10,709,630,379.07
  5. Step 5: Solve for x
    x = 10,709,630,379.07/89,549.82
  6. Step 6: Final answer
    x = 119,594.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.