Home / 81,436.46-112,388.54-51,247.66

Finding the Fourth Proportional to 81,436.46, 112,388.54 and 51,247.66

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Solution

The fourth proportional to 81,436.46, 112,388.54 and 51,247.66 is: 70,725.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,436.46 : 112,388.54 = 51,247.66 : x
  2. Step 2: Convert to fraction form
    81,436.46/112,388.54 = 51,247.66/x
  3. Step 3: Cross multiply
    81,436.46x = 112,388.54 × 51,247.66
  4. Step 4: Simplify right side
    81,436.46x = 5,759,649,685.82
  5. Step 5: Solve for x
    x = 5,759,649,685.82/81,436.46
  6. Step 6: Final answer
    x = 70,725.69

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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.