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Finding the Fourth Proportional to 87,674.80, 131,447.40 and 48,276.40

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Solution

The fourth proportional to 87,674.80, 131,447.40 and 48,276.40 is: 72,378.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,674.80 : 131,447.40 = 48,276.40 : x
  2. Step 2: Convert to fraction form
    87,674.80/131,447.40 = 48,276.40/x
  3. Step 3: Cross multiply
    87,674.80x = 131,447.40 × 48,276.40
  4. Step 4: Simplify right side
    87,674.80x = 6,345,807,261.36
  5. Step 5: Solve for x
    x = 6,345,807,261.36/87,674.80
  6. Step 6: Final answer
    x = 72,378.92

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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.