Home / 91,979.90-126,932.76-53,741.69

Finding the Fourth Proportional to 91,979.90, 126,932.76 and 53,741.69

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Solution

The fourth proportional to 91,979.90, 126,932.76 and 53,741.69 is: 74,163.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,979.90 : 126,932.76 = 53,741.69 : x
  2. Step 2: Convert to fraction form
    91,979.90/126,932.76 = 53,741.69/x
  3. Step 3: Cross multiply
    91,979.90x = 126,932.76 × 53,741.69
  4. Step 4: Simplify right side
    91,979.90x = 6,821,580,404.10
  5. Step 5: Solve for x
    x = 6,821,580,404.10/91,979.90
  6. Step 6: Final answer
    x = 74,163.82

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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.