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Finding the Fourth Proportional to 85,473.79, 128,099.72 and 34,813.73

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Solution

The fourth proportional to 85,473.79, 128,099.72 and 34,813.73 is: 52,175.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,473.79 : 128,099.72 = 34,813.73 : x
  2. Step 2: Convert to fraction form
    85,473.79/128,099.72 = 34,813.73/x
  3. Step 3: Cross multiply
    85,473.79x = 128,099.72 × 34,813.73
  4. Step 4: Simplify right side
    85,473.79x = 4,459,629,472.44
  5. Step 5: Solve for x
    x = 4,459,629,472.44/85,473.79
  6. Step 6: Final answer
    x = 52,175.40

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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.