Home / 81,789.75-112,826.12-54,886.01

Finding the Fourth Proportional to 81,789.75, 112,826.12 and 54,886.01

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Solution

The fourth proportional to 81,789.75, 112,826.12 and 54,886.01 is: 75,713.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,789.75 : 112,826.12 = 54,886.01 : x
  2. Step 2: Convert to fraction form
    81,789.75/112,826.12 = 54,886.01/x
  3. Step 3: Cross multiply
    81,789.75x = 112,826.12 × 54,886.01
  4. Step 4: Simplify right side
    81,789.75x = 6,192,574,712.02
  5. Step 5: Solve for x
    x = 6,192,574,712.02/81,789.75
  6. Step 6: Final answer
    x = 75,713.33

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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.