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Finding the Fourth Proportional to 87,642.60, 131,550.30 and 43,319.40

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Solution

The fourth proportional to 87,642.60, 131,550.30 and 43,319.40 is: 65,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,642.60 : 131,550.30 = 43,319.40 : x
  2. Step 2: Convert to fraction form
    87,642.60/131,550.30 = 43,319.40/x
  3. Step 3: Cross multiply
    87,642.60x = 131,550.30 × 43,319.40
  4. Step 4: Simplify right side
    87,642.60x = 5,698,680,065.82
  5. Step 5: Solve for x
    x = 5,698,680,065.82/87,642.60
  6. Step 6: Final answer
    x = 65,021.81

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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.