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Finding the Fourth Proportional to 85,767.82, 128,660.46 and 29,600.62

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Solution

The fourth proportional to 85,767.82, 128,660.46 and 29,600.62 is: 44,403.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,767.82 : 128,660.46 = 29,600.62 : x
  2. Step 2: Convert to fraction form
    85,767.82/128,660.46 = 29,600.62/x
  3. Step 3: Cross multiply
    85,767.82x = 128,660.46 × 29,600.62
  4. Step 4: Simplify right side
    85,767.82x = 3,808,429,385.49
  5. Step 5: Solve for x
    x = 3,808,429,385.49/85,767.82
  6. Step 6: Final answer
    x = 44,403.94

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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.