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Finding the Fourth Proportional to 57,665.40, 86,621.01 and 54,294.69

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Solution

The fourth proportional to 57,665.40, 86,621.01 and 54,294.69 is: 81,557.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,665.40 : 86,621.01 = 54,294.69 : x
  2. Step 2: Convert to fraction form
    57,665.40/86,621.01 = 54,294.69/x
  3. Step 3: Cross multiply
    57,665.40x = 86,621.01 × 54,294.69
  4. Step 4: Simplify right side
    57,665.40x = 4,703,060,885.44
  5. Step 5: Solve for x
    x = 4,703,060,885.44/57,665.40
  6. Step 6: Final answer
    x = 81,557.76

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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.