Home / 91,971.88-126,930.66-51,689.32

Finding the Fourth Proportional to 91,971.88, 126,930.66 and 51,689.32

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Solution

The fourth proportional to 91,971.88, 126,930.66 and 51,689.32 is: 71,336.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,971.88 : 126,930.66 = 51,689.32 : x
  2. Step 2: Convert to fraction form
    91,971.88/126,930.66 = 51,689.32/x
  3. Step 3: Cross multiply
    91,971.88x = 126,930.66 × 51,689.32
  4. Step 4: Simplify right side
    91,971.88x = 6,560,959,502.55
  5. Step 5: Solve for x
    x = 6,560,959,502.55/91,971.88
  6. Step 6: Final answer
    x = 71,336.58

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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.