Home / 81,675.83-122,439.75-56,727.65

Finding the Fourth Proportional to 81,675.83, 122,439.75 and 56,727.65

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Solution

The fourth proportional to 81,675.83, 122,439.75 and 56,727.65 is: 85,040.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,675.83 : 122,439.75 = 56,727.65 : x
  2. Step 2: Convert to fraction form
    81,675.83/122,439.75 = 56,727.65/x
  3. Step 3: Cross multiply
    81,675.83x = 122,439.75 × 56,727.65
  4. Step 4: Simplify right side
    81,675.83x = 6,945,719,284.09
  5. Step 5: Solve for x
    x = 6,945,719,284.09/81,675.83
  6. Step 6: Final answer
    x = 85,040.08

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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.