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Finding the Fourth Proportional to 57,772.52, 86,658.76 and 20,836.52

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Solution

The fourth proportional to 57,772.52, 86,658.76 and 20,836.52 is: 31,254.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,772.52 : 86,658.76 = 20,836.52 : x
  2. Step 2: Convert to fraction form
    57,772.52/86,658.76 = 20,836.52/x
  3. Step 3: Cross multiply
    57,772.52x = 86,658.76 × 20,836.52
  4. Step 4: Simplify right side
    57,772.52x = 1,805,666,985.92
  5. Step 5: Solve for x
    x = 1,805,666,985.92/57,772.52
  6. Step 6: Final answer
    x = 31,254.77

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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.