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Finding the Fourth Proportional to 56,286.79, 77,675.14 and 30,793.89

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Solution

The fourth proportional to 56,286.79, 77,675.14 and 30,793.89 is: 42,495.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,286.79 : 77,675.14 = 30,793.89 : x
  2. Step 2: Convert to fraction form
    56,286.79/77,675.14 = 30,793.89/x
  3. Step 3: Cross multiply
    56,286.79x = 77,675.14 × 30,793.89
  4. Step 4: Simplify right side
    56,286.79x = 2,391,919,716.89
  5. Step 5: Solve for x
    x = 2,391,919,716.89/56,286.79
  6. Step 6: Final answer
    x = 42,495.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.