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Finding the Fourth Proportional to 43,173.40, 64,763.74 and 12,008.64

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Solution

The fourth proportional to 43,173.40, 64,763.74 and 12,008.64 is: 18,013.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,173.40 : 64,763.74 = 12,008.64 : x
  2. Step 2: Convert to fraction form
    43,173.40/64,763.74 = 12,008.64/x
  3. Step 3: Cross multiply
    43,173.40x = 64,763.74 × 12,008.64
  4. Step 4: Simplify right side
    43,173.40x = 777,724,438.71
  5. Step 5: Solve for x
    x = 777,724,438.71/43,173.40
  6. Step 6: Final answer
    x = 18,013.97

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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.