Home / 91,217.33-125,857.46-55,405.20

Finding the Fourth Proportional to 91,217.33, 125,857.46 and 55,405.20

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Solution

The fourth proportional to 91,217.33, 125,857.46 and 55,405.20 is: 76,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,217.33 : 125,857.46 = 55,405.20 : x
  2. Step 2: Convert to fraction form
    91,217.33/125,857.46 = 55,405.20/x
  3. Step 3: Cross multiply
    91,217.33x = 125,857.46 × 55,405.20
  4. Step 4: Simplify right side
    91,217.33x = 6,973,157,742.79
  5. Step 5: Solve for x
    x = 6,973,157,742.79/91,217.33
  6. Step 6: Final answer
    x = 76,445.54

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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.