Home / 81,545.30-112,480.70-58,917.56

Finding the Fourth Proportional to 81,545.30, 112,480.70 and 58,917.56

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Solution

The fourth proportional to 81,545.30, 112,480.70 and 58,917.56 is: 81,268.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,545.30 : 112,480.70 = 58,917.56 : x
  2. Step 2: Convert to fraction form
    81,545.30/112,480.70 = 58,917.56/x
  3. Step 3: Cross multiply
    81,545.30x = 112,480.70 × 58,917.56
  4. Step 4: Simplify right side
    81,545.30x = 6,627,088,391.09
  5. Step 5: Solve for x
    x = 6,627,088,391.09/81,545.30
  6. Step 6: Final answer
    x = 81,268.80

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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.