Home / 81,827.09-112,936.91-51,214.40

Finding the Fourth Proportional to 81,827.09, 112,936.91 and 51,214.40

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Solution

The fourth proportional to 81,827.09, 112,936.91 and 51,214.40 is: 70,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,827.09 : 112,936.91 = 51,214.40 : x
  2. Step 2: Convert to fraction form
    81,827.09/112,936.91 = 51,214.40/x
  3. Step 3: Cross multiply
    81,827.09x = 112,936.91 × 51,214.40
  4. Step 4: Simplify right side
    81,827.09x = 5,783,996,083.50
  5. Step 5: Solve for x
    x = 5,783,996,083.50/81,827.09
  6. Step 6: Final answer
    x = 70,685.59

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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.