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Finding the Fourth Proportional to 64,858.97, 89,468.60 and 40,944.12

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Solution

The fourth proportional to 64,858.97, 89,468.60 and 40,944.12 is: 56,479.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,858.97 : 89,468.60 = 40,944.12 : x
  2. Step 2: Convert to fraction form
    64,858.97/89,468.60 = 40,944.12/x
  3. Step 3: Cross multiply
    64,858.97x = 89,468.60 × 40,944.12
  4. Step 4: Simplify right side
    64,858.97x = 3,663,212,889.91
  5. Step 5: Solve for x
    x = 3,663,212,889.91/64,858.97
  6. Step 6: Final answer
    x = 56,479.67

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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.