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Finding the Fourth Proportional to 56,689.88, 85,035.62 and 19,753.88

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Solution

The fourth proportional to 56,689.88, 85,035.62 and 19,753.88 is: 29,631.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,689.88 : 85,035.62 = 19,753.88 : x
  2. Step 2: Convert to fraction form
    56,689.88/85,035.62 = 19,753.88/x
  3. Step 3: Cross multiply
    56,689.88x = 85,035.62 × 19,753.88
  4. Step 4: Simplify right side
    56,689.88x = 1,679,783,057.41
  5. Step 5: Solve for x
    x = 1,679,783,057.41/56,689.88
  6. Step 6: Final answer
    x = 29,631.09

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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.