Home / 82,586.40-123,879.92-23,420.32

Finding the Fourth Proportional to 82,586.40, 123,879.92 and 23,420.32

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Solution

The fourth proportional to 82,586.40, 123,879.92 and 23,420.32 is: 35,130.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,586.40 : 123,879.92 = 23,420.32 : x
  2. Step 2: Convert to fraction form
    82,586.40/123,879.92 = 23,420.32/x
  3. Step 3: Cross multiply
    82,586.40x = 123,879.92 × 23,420.32
  4. Step 4: Simplify right side
    82,586.40x = 2,901,307,367.97
  5. Step 5: Solve for x
    x = 2,901,307,367.97/82,586.40
  6. Step 6: Final answer
    x = 35,130.57

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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.