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Finding the Fourth Proportional to 85,671.60, 128,475.44 and 29,495.84

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Solution

The fourth proportional to 85,671.60, 128,475.44 and 29,495.84 is: 44,232.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,671.60 : 128,475.44 = 29,495.84 : x
  2. Step 2: Convert to fraction form
    85,671.60/128,475.44 = 29,495.84/x
  3. Step 3: Cross multiply
    85,671.60x = 128,475.44 × 29,495.84
  4. Step 4: Simplify right side
    85,671.60x = 3,789,491,022.17
  5. Step 5: Solve for x
    x = 3,789,491,022.17/85,671.60
  6. Step 6: Final answer
    x = 44,232.76

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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.