Home / 86,712.90-119,628.38-68,735.76

Finding the Fourth Proportional to 86,712.90, 119,628.38 and 68,735.76

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Solution

The fourth proportional to 86,712.90, 119,628.38 and 68,735.76 is: 94,827.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,712.90 : 119,628.38 = 68,735.76 : x
  2. Step 2: Convert to fraction form
    86,712.90/119,628.38 = 68,735.76/x
  3. Step 3: Cross multiply
    86,712.90x = 119,628.38 × 68,735.76
  4. Step 4: Simplify right side
    86,712.90x = 8,222,747,616.87
  5. Step 5: Solve for x
    x = 8,222,747,616.87/86,712.90
  6. Step 6: Final answer
    x = 94,827.27

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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.