Home / 81,717.76-112,783.88-68,084.18

Finding the Fourth Proportional to 81,717.76, 112,783.88 and 68,084.18

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Solution

The fourth proportional to 81,717.76, 112,783.88 and 68,084.18 is: 93,967.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.76 : 112,783.88 = 68,084.18 : x
  2. Step 2: Convert to fraction form
    81,717.76/112,783.88 = 68,084.18/x
  3. Step 3: Cross multiply
    81,717.76x = 112,783.88 × 68,084.18
  4. Step 4: Simplify right side
    81,717.76x = 7,678,797,987.02
  5. Step 5: Solve for x
    x = 7,678,797,987.02/81,717.76
  6. Step 6: Final answer
    x = 93,967.31

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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.