Home / 82,100.00-123,111.72-42,646.52

Finding the Fourth Proportional to 82,100.00, 123,111.72 and 42,646.52

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Solution

The fourth proportional to 82,100.00, 123,111.72 and 42,646.52 is: 63,949.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,100.00 : 123,111.72 = 42,646.52 : x
  2. Step 2: Convert to fraction form
    82,100.00/123,111.72 = 42,646.52/x
  3. Step 3: Cross multiply
    82,100.00x = 123,111.72 × 42,646.52
  4. Step 4: Simplify right side
    82,100.00x = 5,250,285,813.66
  5. Step 5: Solve for x
    x = 5,250,285,813.66/82,100.00
  6. Step 6: Final answer
    x = 63,949.89

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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.