Home / 91,021.20-125,606.34-57,048

Finding the Fourth Proportional to 91,021.20, 125,606.34 and 57,048

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Solution

The fourth proportional to 91,021.20, 125,606.34 and 57,048 is: 78,724.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,021.20 : 125,606.34 = 57,048 : x
  2. Step 2: Convert to fraction form
    91,021.20/125,606.34 = 57,048/x
  3. Step 3: Cross multiply
    91,021.20x = 125,606.34 × 57,048
  4. Step 4: Simplify right side
    91,021.20x = 7,165,590,484.32
  5. Step 5: Solve for x
    x = 7,165,590,484.32/91,021.20
  6. Step 6: Final answer
    x = 78,724.41

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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.