Home / 76,738.40-105,915.32-51,573.32

Finding the Fourth Proportional to 76,738.40, 105,915.32 and 51,573.32

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Solution

The fourth proportional to 76,738.40, 105,915.32 and 51,573.32 is: 71,182.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,738.40 : 105,915.32 = 51,573.32 : x
  2. Step 2: Convert to fraction form
    76,738.40/105,915.32 = 51,573.32/x
  3. Step 3: Cross multiply
    76,738.40x = 105,915.32 × 51,573.32
  4. Step 4: Simplify right side
    76,738.40x = 5,462,404,691.26
  5. Step 5: Solve for x
    x = 5,462,404,691.26/76,738.40
  6. Step 6: Final answer
    x = 71,182.16

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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.