Home / 82,359.78-123,538.77-20,030.34

Finding the Fourth Proportional to 82,359.78, 123,538.77 and 20,030.34

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Solution

The fourth proportional to 82,359.78, 123,538.77 and 20,030.34 is: 30,045.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,359.78 : 123,538.77 = 20,030.34 : x
  2. Step 2: Convert to fraction form
    82,359.78/123,538.77 = 20,030.34/x
  3. Step 3: Cross multiply
    82,359.78x = 123,538.77 × 20,030.34
  4. Step 4: Simplify right side
    82,359.78x = 2,474,523,566.28
  5. Step 5: Solve for x
    x = 2,474,523,566.28/82,359.78
  6. Step 6: Final answer
    x = 30,045.29

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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.