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Finding the Fourth Proportional to 64,980.01, 89,662.30 and 36,685.09

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Solution

The fourth proportional to 64,980.01, 89,662.30 and 36,685.09 is: 50,619.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,980.01 : 89,662.30 = 36,685.09 : x
  2. Step 2: Convert to fraction form
    64,980.01/89,662.30 = 36,685.09/x
  3. Step 3: Cross multiply
    64,980.01x = 89,662.30 × 36,685.09
  4. Step 4: Simplify right side
    64,980.01x = 3,289,269,545.11
  5. Step 5: Solve for x
    x = 3,289,269,545.11/64,980.01
  6. Step 6: Final answer
    x = 50,619.71

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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.