Home / 85,677.15-128,520.77-33,086.91

Finding the Fourth Proportional to 85,677.15, 128,520.77 and 33,086.91

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Solution

The fourth proportional to 85,677.15, 128,520.77 and 33,086.91 is: 49,632.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,677.15 : 128,520.77 = 33,086.91 : x
  2. Step 2: Convert to fraction form
    85,677.15/128,520.77 = 33,086.91/x
  3. Step 3: Cross multiply
    85,677.15x = 128,520.77 × 33,086.91
  4. Step 4: Simplify right side
    85,677.15x = 4,252,354,984.69
  5. Step 5: Solve for x
    x = 4,252,354,984.69/85,677.15
  6. Step 6: Final answer
    x = 49,632.31

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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.