Home / 91,883.24-126,631.78-71,729.64

Finding the Fourth Proportional to 91,883.24, 126,631.78 and 71,729.64

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Solution

The fourth proportional to 91,883.24, 126,631.78 and 71,729.64 is: 98,856.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,883.24 : 126,631.78 = 71,729.64 : x
  2. Step 2: Convert to fraction form
    91,883.24/126,631.78 = 71,729.64/x
  3. Step 3: Cross multiply
    91,883.24x = 126,631.78 × 71,729.64
  4. Step 4: Simplify right side
    91,883.24x = 9,083,251,991.96
  5. Step 5: Solve for x
    x = 9,083,251,991.96/91,883.24
  6. Step 6: Final answer
    x = 98,856.46

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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.