Home / 91,205.42-125,865.60-57,215.36

Finding the Fourth Proportional to 91,205.42, 125,865.60 and 57,215.36

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Solution

The fourth proportional to 91,205.42, 125,865.60 and 57,215.36 is: 78,958.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,205.42 : 125,865.60 = 57,215.36 : x
  2. Step 2: Convert to fraction form
    91,205.42/125,865.60 = 57,215.36/x
  3. Step 3: Cross multiply
    91,205.42x = 125,865.60 × 57,215.36
  4. Step 4: Simplify right side
    91,205.42x = 7,201,445,615.62
  5. Step 5: Solve for x
    x = 7,201,445,615.62/91,205.42
  6. Step 6: Final answer
    x = 78,958.53

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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.