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Finding the Fourth Proportional to 89,895.87, 134,804.61 and 47,765.79

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Solution

The fourth proportional to 89,895.87, 134,804.61 and 47,765.79 is: 71,627.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,895.87 : 134,804.61 = 47,765.79 : x
  2. Step 2: Convert to fraction form
    89,895.87/134,804.61 = 47,765.79/x
  3. Step 3: Cross multiply
    89,895.87x = 134,804.61 × 47,765.79
  4. Step 4: Simplify right side
    89,895.87x = 6,439,048,692.29
  5. Step 5: Solve for x
    x = 6,439,048,692.29/89,895.87
  6. Step 6: Final answer
    x = 71,627.86

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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.