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Finding the Fourth Proportional to 64,843.74, 89,489.88 and 36,555.30

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Solution

The fourth proportional to 64,843.74, 89,489.88 and 36,555.30 is: 50,449.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,843.74 : 89,489.88 = 36,555.30 : x
  2. Step 2: Convert to fraction form
    64,843.74/89,489.88 = 36,555.30/x
  3. Step 3: Cross multiply
    64,843.74x = 89,489.88 × 36,555.30
  4. Step 4: Simplify right side
    64,843.74x = 3,271,329,410.36
  5. Step 5: Solve for x
    x = 3,271,329,410.36/64,843.74
  6. Step 6: Final answer
    x = 50,449.43

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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.