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Finding the Fourth Proportional to 89,310.32, 133,965.36 and 69,603.62

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Solution

The fourth proportional to 89,310.32, 133,965.36 and 69,603.62 is: 104,405.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,310.32 : 133,965.36 = 69,603.62 : x
  2. Step 2: Convert to fraction form
    89,310.32/133,965.36 = 69,603.62/x
  3. Step 3: Cross multiply
    89,310.32x = 133,965.36 × 69,603.62
  4. Step 4: Simplify right side
    89,310.32x = 9,324,474,010.60
  5. Step 5: Solve for x
    x = 9,324,474,010.60/89,310.32
  6. Step 6: Final answer
    x = 104,405.34

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1.5x scale

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.