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Finding the Fourth Proportional to 87,369.60, 131,025.60 and 31,958.40

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Solution

The fourth proportional to 87,369.60, 131,025.60 and 31,958.40 is: 47,927.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,369.60 : 131,025.60 = 31,958.40 : x
  2. Step 2: Convert to fraction form
    87,369.60/131,025.60 = 31,958.40/x
  3. Step 3: Cross multiply
    87,369.60x = 131,025.60 × 31,958.40
  4. Step 4: Simplify right side
    87,369.60x = 4,187,368,535.04
  5. Step 5: Solve for x
    x = 4,187,368,535.04/87,369.60
  6. Step 6: Final answer
    x = 47,927.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.