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Finding the Fourth Proportional to 85,600.40, 128,422.47 and 32,995.76

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Solution

The fourth proportional to 85,600.40, 128,422.47 and 32,995.76 is: 49,502.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,600.40 : 128,422.47 = 32,995.76 : x
  2. Step 2: Convert to fraction form
    85,600.40/128,422.47 = 32,995.76/x
  3. Step 3: Cross multiply
    85,600.40x = 128,422.47 × 32,995.76
  4. Step 4: Simplify right side
    85,600.40x = 4,237,396,998.73
  5. Step 5: Solve for x
    x = 4,237,396,998.73/85,600.40
  6. Step 6: Final answer
    x = 49,502.07

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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.