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Finding the Fourth Proportional to 85,399.98, 128,014.24 and 29,201.66

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Solution

The fourth proportional to 85,399.98, 128,014.24 and 29,201.66 is: 43,773.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,399.98 : 128,014.24 = 29,201.66 : x
  2. Step 2: Convert to fraction form
    85,399.98/128,014.24 = 29,201.66/x
  3. Step 3: Cross multiply
    85,399.98x = 128,014.24 × 29,201.66
  4. Step 4: Simplify right side
    85,399.98x = 3,738,227,598.56
  5. Step 5: Solve for x
    x = 3,738,227,598.56/85,399.98
  6. Step 6: Final answer
    x = 43,773.17

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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.