Home / 81,007.65-121,511.48-49,514.85

Finding the Fourth Proportional to 81,007.65, 121,511.48 and 49,514.85

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Solution

The fourth proportional to 81,007.65, 121,511.48 and 49,514.85 is: 74,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,007.65 : 121,511.48 = 49,514.85 : x
  2. Step 2: Convert to fraction form
    81,007.65/121,511.48 = 49,514.85/x
  3. Step 3: Cross multiply
    81,007.65x = 121,511.48 × 49,514.85
  4. Step 4: Simplify right side
    81,007.65x = 6,016,622,457.90
  5. Step 5: Solve for x
    x = 6,016,622,457.90/81,007.65
  6. Step 6: Final answer
    x = 74,272.28

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1.5x scale

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.