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Finding the Fourth Proportional to 85,469.40, 128,204.10 and 29,301.98

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Solution

The fourth proportional to 85,469.40, 128,204.10 and 29,301.98 is: 43,952.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,469.40 : 128,204.10 = 29,301.98 : x
  2. Step 2: Convert to fraction form
    85,469.40/128,204.10 = 29,301.98/x
  3. Step 3: Cross multiply
    85,469.40x = 128,204.10 × 29,301.98
  4. Step 4: Simplify right side
    85,469.40x = 3,756,633,333.10
  5. Step 5: Solve for x
    x = 3,756,633,333.10/85,469.40
  6. Step 6: Final answer
    x = 43,952.96

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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.