Home / 81,826.09-112,935.53-51,213.40

Finding the Fourth Proportional to 81,826.09, 112,935.53 and 51,213.40

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Solution

The fourth proportional to 81,826.09, 112,935.53 and 51,213.40 is: 70,684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,826.09 : 112,935.53 = 51,213.40 : x
  2. Step 2: Convert to fraction form
    81,826.09/112,935.53 = 51,213.40/x
  3. Step 3: Cross multiply
    81,826.09x = 112,935.53 × 51,213.40
  4. Step 4: Simplify right side
    81,826.09x = 5,783,812,317.80
  5. Step 5: Solve for x
    x = 5,783,812,317.80/81,826.09
  6. Step 6: Final answer
    x = 70,684.21

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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.