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Finding the Fourth Proportional to 56,366.70, 84,559.80 and 18,930.39

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Solution

The fourth proportional to 56,366.70, 84,559.80 and 18,930.39 is: 28,398.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,366.70 : 84,559.80 = 18,930.39 : x
  2. Step 2: Convert to fraction form
    56,366.70/84,559.80 = 18,930.39/x
  3. Step 3: Cross multiply
    56,366.70x = 84,559.80 × 18,930.39
  4. Step 4: Simplify right side
    56,366.70x = 1,600,749,992.32
  5. Step 5: Solve for x
    x = 1,600,749,992.32/56,366.70
  6. Step 6: Final answer
    x = 28,398.86

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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.