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Finding the Fourth Proportional to 28,371.99, 42,558 and 28,331.01

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Solution

The fourth proportional to 28,371.99, 42,558 and 28,331.01 is: 42,496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.99 : 42,558 = 28,331.01 : x
  2. Step 2: Convert to fraction form
    28,371.99/42,558 = 28,331.01/x
  3. Step 3: Cross multiply
    28,371.99x = 42,558 × 28,331.01
  4. Step 4: Simplify right side
    28,371.99x = 1,205,711,123.58
  5. Step 5: Solve for x
    x = 1,205,711,123.58/28,371.99
  6. Step 6: Final answer
    x = 42,496.53

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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.