Home / 87,765.93-121,065.03-53,789.67

Finding the Fourth Proportional to 87,765.93, 121,065.03 and 53,789.67

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Solution

The fourth proportional to 87,765.93, 121,065.03 and 53,789.67 is: 74,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,765.93 : 121,065.03 = 53,789.67 : x
  2. Step 2: Convert to fraction form
    87,765.93/121,065.03 = 53,789.67/x
  3. Step 3: Cross multiply
    87,765.93x = 121,065.03 × 53,789.67
  4. Step 4: Simplify right side
    87,765.93x = 6,512,048,012.24
  5. Step 5: Solve for x
    x = 6,512,048,012.24/87,765.93
  6. Step 6: Final answer
    x = 74,197.90

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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.