Home / 91,971.72-126,924.31-51,686.28

Finding the Fourth Proportional to 91,971.72, 126,924.31 and 51,686.28

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Solution

The fourth proportional to 91,971.72, 126,924.31 and 51,686.28 is: 71,328.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,971.72 : 126,924.31 = 51,686.28 : x
  2. Step 2: Convert to fraction form
    91,971.72/126,924.31 = 51,686.28/x
  3. Step 3: Cross multiply
    91,971.72x = 126,924.31 × 51,686.28
  4. Step 4: Simplify right side
    91,971.72x = 6,560,245,425.47
  5. Step 5: Solve for x
    x = 6,560,245,425.47/91,971.72
  6. Step 6: Final answer
    x = 71,328.94

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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.