Home / 87,336.82-120,636.21-64,717.30

Finding the Fourth Proportional to 87,336.82, 120,636.21 and 64,717.30

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Solution

The fourth proportional to 87,336.82, 120,636.21 and 64,717.30 is: 89,392.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,336.82 : 120,636.21 = 64,717.30 : x
  2. Step 2: Convert to fraction form
    87,336.82/120,636.21 = 64,717.30/x
  3. Step 3: Cross multiply
    87,336.82x = 120,636.21 × 64,717.30
  4. Step 4: Simplify right side
    87,336.82x = 7,807,249,793.43
  5. Step 5: Solve for x
    x = 7,807,249,793.43/87,336.82
  6. Step 6: Final answer
    x = 89,392.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.