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Finding the Fourth Proportional to 43,197, 64,795.50 and 15,495

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Solution

The fourth proportional to 43,197, 64,795.50 and 15,495 is: 23,242.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,197 : 64,795.50 = 15,495 : x
  2. Step 2: Convert to fraction form
    43,197/64,795.50 = 15,495/x
  3. Step 3: Cross multiply
    43,197x = 64,795.50 × 15,495
  4. Step 4: Simplify right side
    43,197x = 1,004,006,272.50
  5. Step 5: Solve for x
    x = 1,004,006,272.50/43,197
  6. Step 6: Final answer
    x = 23,242.50

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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.