Home / 81,990.43-113,144.75-46,178.30

Finding the Fourth Proportional to 81,990.43, 113,144.75 and 46,178.30

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Solution

The fourth proportional to 81,990.43, 113,144.75 and 46,178.30 is: 63,724.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,990.43 : 113,144.75 = 46,178.30 : x
  2. Step 2: Convert to fraction form
    81,990.43/113,144.75 = 46,178.30/x
  3. Step 3: Cross multiply
    81,990.43x = 113,144.75 × 46,178.30
  4. Step 4: Simplify right side
    81,990.43x = 5,224,832,434.06
  5. Step 5: Solve for x
    x = 5,224,832,434.06/81,990.43
  6. Step 6: Final answer
    x = 63,724.91

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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.