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Finding the Fourth Proportional to 57,212.70, 85,819.05 and 54,005.10

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Solution

The fourth proportional to 57,212.70, 85,819.05 and 54,005.10 is: 81,007.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,212.70 : 85,819.05 = 54,005.10 : x
  2. Step 2: Convert to fraction form
    57,212.70/85,819.05 = 54,005.10/x
  3. Step 3: Cross multiply
    57,212.70x = 85,819.05 × 54,005.10
  4. Step 4: Simplify right side
    57,212.70x = 4,634,666,377.16
  5. Step 5: Solve for x
    x = 4,634,666,377.16/57,212.70
  6. Step 6: Final answer
    x = 81,007.65

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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.