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Finding the Fourth Proportional to 56,387.34, 84,591.34 and 18,951.37

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Solution

The fourth proportional to 56,387.34, 84,591.34 and 18,951.37 is: 28,430.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,387.34 : 84,591.34 = 18,951.37 : x
  2. Step 2: Convert to fraction form
    56,387.34/84,591.34 = 18,951.37/x
  3. Step 3: Cross multiply
    56,387.34x = 84,591.34 × 18,951.37
  4. Step 4: Simplify right side
    56,387.34x = 1,603,121,524.28
  5. Step 5: Solve for x
    x = 1,603,121,524.28/56,387.34
  6. Step 6: Final answer
    x = 28,430.52

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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.