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Finding the Fourth Proportional to 59,991, 89,986.50 and 16,215

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Solution

The fourth proportional to 59,991, 89,986.50 and 16,215 is: 24,322.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,991 : 89,986.50 = 16,215 : x
  2. Step 2: Convert to fraction form
    59,991/89,986.50 = 16,215/x
  3. Step 3: Cross multiply
    59,991x = 89,986.50 × 16,215
  4. Step 4: Simplify right side
    59,991x = 1,459,131,097.50
  5. Step 5: Solve for x
    x = 1,459,131,097.50/59,991
  6. Step 6: Final answer
    x = 24,322.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.