Home / 91,731.86-126,591.26-55,428.27

Finding the Fourth Proportional to 91,731.86, 126,591.26 and 55,428.27

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Solution

The fourth proportional to 91,731.86, 126,591.26 and 55,428.27 is: 76,491.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,731.86 : 126,591.26 = 55,428.27 : x
  2. Step 2: Convert to fraction form
    91,731.86/126,591.26 = 55,428.27/x
  3. Step 3: Cross multiply
    91,731.86x = 126,591.26 × 55,428.27
  4. Step 4: Simplify right side
    91,731.86x = 7,016,734,261.78
  5. Step 5: Solve for x
    x = 7,016,734,261.78/91,731.86
  6. Step 6: Final answer
    x = 76,491.80

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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.