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Finding the Fourth Proportional to 87,854.40, 131,749.20 and 43,466.40

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Solution

The fourth proportional to 87,854.40, 131,749.20 and 43,466.40 is: 65,183.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.40 : 131,749.20 = 43,466.40 : x
  2. Step 2: Convert to fraction form
    87,854.40/131,749.20 = 43,466.40/x
  3. Step 3: Cross multiply
    87,854.40x = 131,749.20 × 43,466.40
  4. Step 4: Simplify right side
    87,854.40x = 5,726,663,426.88
  5. Step 5: Solve for x
    x = 5,726,663,426.88/87,854.40
  6. Step 6: Final answer
    x = 65,183.57

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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.