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Finding the Fourth Proportional to 43,148, 64,737.46 and 16,871.60

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Solution

The fourth proportional to 43,148, 64,737.46 and 16,871.60 is: 25,313.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,148 : 64,737.46 = 16,871.60 : x
  2. Step 2: Convert to fraction form
    43,148/64,737.46 = 16,871.60/x
  3. Step 3: Cross multiply
    43,148x = 64,737.46 × 16,871.60
  4. Step 4: Simplify right side
    43,148x = 1,092,224,530.14
  5. Step 5: Solve for x
    x = 1,092,224,530.14/43,148
  6. Step 6: Final answer
    x = 25,313.45

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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.