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Finding the Fourth Proportional to 64,662.49, 89,230.44 and 35,981.20

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Solution

The fourth proportional to 64,662.49, 89,230.44 and 35,981.20 is: 49,651.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,662.49 : 89,230.44 = 35,981.20 : x
  2. Step 2: Convert to fraction form
    64,662.49/89,230.44 = 35,981.20/x
  3. Step 3: Cross multiply
    64,662.49x = 89,230.44 × 35,981.20
  4. Step 4: Simplify right side
    64,662.49x = 3,210,618,307.73
  5. Step 5: Solve for x
    x = 3,210,618,307.73/64,662.49
  6. Step 6: Final answer
    x = 49,651.94

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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.