Home / 81,257.70-112,141.32-45,451.02

Finding the Fourth Proportional to 81,257.70, 112,141.32 and 45,451.02

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Solution

The fourth proportional to 81,257.70, 112,141.32 and 45,451.02 is: 62,725.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,257.70 : 112,141.32 = 45,451.02 : x
  2. Step 2: Convert to fraction form
    81,257.70/112,141.32 = 45,451.02/x
  3. Step 3: Cross multiply
    81,257.70x = 112,141.32 × 45,451.02
  4. Step 4: Simplify right side
    81,257.70x = 5,096,937,378.15
  5. Step 5: Solve for x
    x = 5,096,937,378.15/81,257.70
  6. Step 6: Final answer
    x = 62,725.59

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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.