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Finding the Fourth Proportional to 43,273.40, 64,934.40 and 18,309.20

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Solution

The fourth proportional to 43,273.40, 64,934.40 and 18,309.20 is: 27,474.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,273.40 : 64,934.40 = 18,309.20 : x
  2. Step 2: Convert to fraction form
    43,273.40/64,934.40 = 18,309.20/x
  3. Step 3: Cross multiply
    43,273.40x = 64,934.40 × 18,309.20
  4. Step 4: Simplify right side
    43,273.40x = 1,188,896,916.48
  5. Step 5: Solve for x
    x = 1,188,896,916.48/43,273.40
  6. Step 6: Final answer
    x = 27,474.08

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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.