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Finding the Fourth Proportional to 87,318.38, 120,499.36 and 47,574.38

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Solution

The fourth proportional to 87,318.38, 120,499.36 and 47,574.38 is: 65,652.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,318.38 : 120,499.36 = 47,574.38 : x
  2. Step 2: Convert to fraction form
    87,318.38/120,499.36 = 47,574.38/x
  3. Step 3: Cross multiply
    87,318.38x = 120,499.36 × 47,574.38
  4. Step 4: Simplify right side
    87,318.38x = 5,732,681,620.96
  5. Step 5: Solve for x
    x = 5,732,681,620.96/87,318.38
  6. Step 6: Final answer
    x = 65,652.64

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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.