Home / 81,512.90-112,493.25-45,705.23

Finding the Fourth Proportional to 81,512.90, 112,493.25 and 45,705.23

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Solution

The fourth proportional to 81,512.90, 112,493.25 and 45,705.23 is: 63,076.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,512.90 : 112,493.25 = 45,705.23 : x
  2. Step 2: Convert to fraction form
    81,512.90/112,493.25 = 45,705.23/x
  3. Step 3: Cross multiply
    81,512.90x = 112,493.25 × 45,705.23
  4. Step 4: Simplify right side
    81,512.90x = 5,141,529,864.70
  5. Step 5: Solve for x
    x = 5,141,529,864.70/81,512.90
  6. Step 6: Final answer
    x = 63,076.27

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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.