Home / 81,714.75-112,779.74-68,081.18

Finding the Fourth Proportional to 81,714.75, 112,779.74 and 68,081.18

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Solution

The fourth proportional to 81,714.75, 112,779.74 and 68,081.18 is: 93,963.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,714.75 : 112,779.74 = 68,081.18 : x
  2. Step 2: Convert to fraction form
    81,714.75/112,779.74 = 68,081.18/x
  3. Step 3: Cross multiply
    81,714.75x = 112,779.74 × 68,081.18
  4. Step 4: Simplify right side
    81,714.75x = 7,678,177,779.29
  5. Step 5: Solve for x
    x = 7,678,177,779.29/81,714.75
  6. Step 6: Final answer
    x = 93,963.18

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1.5x scale

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.