Home / 76,738.64-105,915.66-51,573.56

Finding the Fourth Proportional to 76,738.64, 105,915.66 and 51,573.56

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Solution

The fourth proportional to 76,738.64, 105,915.66 and 51,573.56 is: 71,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,738.64 : 105,915.66 = 51,573.56 : x
  2. Step 2: Convert to fraction form
    76,738.64/105,915.66 = 51,573.56/x
  3. Step 3: Cross multiply
    76,738.64x = 105,915.66 × 51,573.56
  4. Step 4: Simplify right side
    76,738.64x = 5,462,447,645.95
  5. Step 5: Solve for x
    x = 5,462,447,645.95/76,738.64
  6. Step 6: Final answer
    x = 71,182.49

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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.