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Finding the Fourth Proportional to 82,016.40, 122,927.40 and 42,553.20

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Solution

The fourth proportional to 82,016.40, 122,927.40 and 42,553.20 is: 63,779.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,016.40 : 122,927.40 = 42,553.20 : x
  2. Step 2: Convert to fraction form
    82,016.40/122,927.40 = 42,553.20/x
  3. Step 3: Cross multiply
    82,016.40x = 122,927.40 × 42,553.20
  4. Step 4: Simplify right side
    82,016.40x = 5,230,954,237.68
  5. Step 5: Solve for x
    x = 5,230,954,237.68/82,016.40
  6. Step 6: Final answer
    x = 63,779.37

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1.5x scale

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.