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Finding the Fourth Proportional to 85,472.55, 128,097.85 and 34,812.49

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Solution

The fourth proportional to 85,472.55, 128,097.85 and 34,812.49 is: 52,173.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,472.55 : 128,097.85 = 34,812.49 : x
  2. Step 2: Convert to fraction form
    85,472.55/128,097.85 = 34,812.49/x
  3. Step 3: Cross multiply
    85,472.55x = 128,097.85 × 34,812.49
  4. Step 4: Simplify right side
    85,472.55x = 4,459,405,122.15
  5. Step 5: Solve for x
    x = 4,459,405,122.15/85,472.55
  6. Step 6: Final answer
    x = 52,173.54

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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.