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Finding the Fourth Proportional to 64,618.32, 89,063.64 and 49,299.60

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Solution

The fourth proportional to 64,618.32, 89,063.64 and 49,299.60 is: 67,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,618.32 : 89,063.64 = 49,299.60 : x
  2. Step 2: Convert to fraction form
    64,618.32/89,063.64 = 49,299.60/x
  3. Step 3: Cross multiply
    64,618.32x = 89,063.64 × 49,299.60
  4. Step 4: Simplify right side
    64,618.32x = 4,390,801,826.54
  5. Step 5: Solve for x
    x = 4,390,801,826.54/64,618.32
  6. Step 6: Final answer
    x = 67,949.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.