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Finding the Fourth Proportional to 57,313.80, 85,927.68 and 19,860.72

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Solution

The fourth proportional to 57,313.80, 85,927.68 and 19,860.72 is: 29,776.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,313.80 : 85,927.68 = 19,860.72 : x
  2. Step 2: Convert to fraction form
    57,313.80/85,927.68 = 19,860.72/x
  3. Step 3: Cross multiply
    57,313.80x = 85,927.68 × 19,860.72
  4. Step 4: Simplify right side
    57,313.80x = 1,706,585,592.73
  5. Step 5: Solve for x
    x = 1,706,585,592.73/57,313.80
  6. Step 6: Final answer
    x = 29,776.17

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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.