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Finding the Fourth Proportional to 87,403.63, 120,620.61 and 49,164.96

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Solution

The fourth proportional to 87,403.63, 120,620.61 and 49,164.96 is: 67,849.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,403.63 : 120,620.61 = 49,164.96 : x
  2. Step 2: Convert to fraction form
    87,403.63/120,620.61 = 49,164.96/x
  3. Step 3: Cross multiply
    87,403.63x = 120,620.61 × 49,164.96
  4. Step 4: Simplify right side
    87,403.63x = 5,930,307,465.83
  5. Step 5: Solve for x
    x = 5,930,307,465.83/87,403.63
  6. Step 6: Final answer
    x = 67,849.67

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1.5x scale

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.