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Finding the Fourth Proportional to 39,491.49, 54,492.17 and 22,721.25

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Solution

The fourth proportional to 39,491.49, 54,492.17 and 22,721.25 is: 31,351.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,491.49 : 54,492.17 = 22,721.25 : x
  2. Step 2: Convert to fraction form
    39,491.49/54,492.17 = 22,721.25/x
  3. Step 3: Cross multiply
    39,491.49x = 54,492.17 × 22,721.25
  4. Step 4: Simplify right side
    39,491.49x = 1,238,130,104.01
  5. Step 5: Solve for x
    x = 1,238,130,104.01/39,491.49
  6. Step 6: Final answer
    x = 31,351.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.