Home / 91,211.88-125,874.48-57,221.76

Finding the Fourth Proportional to 91,211.88, 125,874.48 and 57,221.76

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Solution

The fourth proportional to 91,211.88, 125,874.48 and 57,221.76 is: 78,967.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,211.88 : 125,874.48 = 57,221.76 : x
  2. Step 2: Convert to fraction form
    91,211.88/125,874.48 = 57,221.76/x
  3. Step 3: Cross multiply
    91,211.88x = 125,874.48 × 57,221.76
  4. Step 4: Simplify right side
    91,211.88x = 7,202,759,284.68
  5. Step 5: Solve for x
    x = 7,202,759,284.68/91,211.88
  6. Step 6: Final answer
    x = 78,967.34

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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.