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Finding the Fourth Proportional to 39,773.52, 54,888.37 and 21,869.53

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Solution

The fourth proportional to 39,773.52, 54,888.37 and 21,869.53 is: 30,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,773.52 : 54,888.37 = 21,869.53 : x
  2. Step 2: Convert to fraction form
    39,773.52/54,888.37 = 21,869.53/x
  3. Step 3: Cross multiply
    39,773.52x = 54,888.37 × 21,869.53
  4. Step 4: Simplify right side
    39,773.52x = 1,200,382,662.47
  5. Step 5: Solve for x
    x = 1,200,382,662.47/39,773.52
  6. Step 6: Final answer
    x = 30,180.45

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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.