Home / 91,217.36-125,845.32-55,393.84

Finding the Fourth Proportional to 91,217.36, 125,845.32 and 55,393.84

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Solution

The fourth proportional to 91,217.36, 125,845.32 and 55,393.84 is: 76,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,217.36 : 125,845.32 = 55,393.84 : x
  2. Step 2: Convert to fraction form
    91,217.36/125,845.32 = 55,393.84/x
  3. Step 3: Cross multiply
    91,217.36x = 125,845.32 × 55,393.84
  4. Step 4: Simplify right side
    91,217.36x = 6,971,055,520.83
  5. Step 5: Solve for x
    x = 6,971,055,520.83/91,217.36
  6. Step 6: Final answer
    x = 76,422.47

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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.