Home / 91,447.92-126,201.72-53,721.84

Finding the Fourth Proportional to 91,447.92, 126,201.72 and 53,721.84

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Solution

The fourth proportional to 91,447.92, 126,201.72 and 53,721.84 is: 74,138.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,447.92 : 126,201.72 = 53,721.84 : x
  2. Step 2: Convert to fraction form
    91,447.92/126,201.72 = 53,721.84/x
  3. Step 3: Cross multiply
    91,447.92x = 126,201.72 × 53,721.84
  4. Step 4: Simplify right side
    91,447.92x = 6,779,788,609.56
  5. Step 5: Solve for x
    x = 6,779,788,609.56/91,447.92
  6. Step 6: Final answer
    x = 74,138.25

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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.