Home / 81,519.12-112,494.96-45,709.02

Finding the Fourth Proportional to 81,519.12, 112,494.96 and 45,709.02

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Solution

The fourth proportional to 81,519.12, 112,494.96 and 45,709.02 is: 63,077.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,519.12 : 112,494.96 = 45,709.02 : x
  2. Step 2: Convert to fraction form
    81,519.12/112,494.96 = 45,709.02/x
  3. Step 3: Cross multiply
    81,519.12x = 112,494.96 × 45,709.02
  4. Step 4: Simplify right side
    81,519.12x = 5,142,034,376.54
  5. Step 5: Solve for x
    x = 5,142,034,376.54/81,519.12
  6. Step 6: Final answer
    x = 63,077.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.