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Finding the Fourth Proportional to 30,137.49, 45,275.49 and 21,273.26

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Solution

The fourth proportional to 30,137.49, 45,275.49 and 21,273.26 is: 31,958.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,137.49 : 45,275.49 = 21,273.26 : x
  2. Step 2: Convert to fraction form
    30,137.49/45,275.49 = 21,273.26/x
  3. Step 3: Cross multiply
    30,137.49x = 45,275.49 × 21,273.26
  4. Step 4: Simplify right side
    30,137.49x = 963,157,044.02
  5. Step 5: Solve for x
    x = 963,157,044.02/30,137.49
  6. Step 6: Final answer
    x = 31,958.77

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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.