Home / 90,615.81-125,052.53-54,812.37

Finding the Fourth Proportional to 90,615.81, 125,052.53 and 54,812.37

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Solution

The fourth proportional to 90,615.81, 125,052.53 and 54,812.37 is: 75,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,615.81 : 125,052.53 = 54,812.37 : x
  2. Step 2: Convert to fraction form
    90,615.81/125,052.53 = 54,812.37/x
  3. Step 3: Cross multiply
    90,615.81x = 125,052.53 × 54,812.37
  4. Step 4: Simplify right side
    90,615.81x = 6,854,425,269.73
  5. Step 5: Solve for x
    x = 6,854,425,269.73/90,615.81
  6. Step 6: Final answer
    x = 75,642.71

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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.