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Finding the Fourth Proportional to 87,434.40, 131,054.40 and 48,019.80

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Solution

The fourth proportional to 87,434.40, 131,054.40 and 48,019.80 is: 71,976.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,434.40 : 131,054.40 = 48,019.80 : x
  2. Step 2: Convert to fraction form
    87,434.40/131,054.40 = 48,019.80/x
  3. Step 3: Cross multiply
    87,434.40x = 131,054.40 × 48,019.80
  4. Step 4: Simplify right side
    87,434.40x = 6,293,206,077.12
  5. Step 5: Solve for x
    x = 6,293,206,077.12/87,434.40
  6. Step 6: Final answer
    x = 71,976.32

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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.