Home / 90,712.12-136,043.58-57,382.12

Finding the Fourth Proportional to 90,712.12, 136,043.58 and 57,382.12

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Solution

The fourth proportional to 90,712.12, 136,043.58 and 57,382.12 is: 86,057.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,712.12 : 136,043.58 = 57,382.12 : x
  2. Step 2: Convert to fraction form
    90,712.12/136,043.58 = 57,382.12/x
  3. Step 3: Cross multiply
    90,712.12x = 136,043.58 × 57,382.12
  4. Step 4: Simplify right side
    90,712.12x = 7,806,469,032.79
  5. Step 5: Solve for x
    x = 7,806,469,032.79/90,712.12
  6. Step 6: Final answer
    x = 86,057.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.