Home / 81,928.62-113,001.13-61,786.35

Finding the Fourth Proportional to 81,928.62, 113,001.13 and 61,786.35

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Solution

The fourth proportional to 81,928.62, 113,001.13 and 61,786.35 is: 85,219.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,928.62 : 113,001.13 = 61,786.35 : x
  2. Step 2: Convert to fraction form
    81,928.62/113,001.13 = 61,786.35/x
  3. Step 3: Cross multiply
    81,928.62x = 113,001.13 × 61,786.35
  4. Step 4: Simplify right side
    81,928.62x = 6,981,927,368.58
  5. Step 5: Solve for x
    x = 6,981,927,368.58/81,928.62
  6. Step 6: Final answer
    x = 85,219.64

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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.