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Finding the Fourth Proportional to 60,913.34, 91,379.82 and 18,783.56

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Solution

The fourth proportional to 60,913.34, 91,379.82 and 18,783.56 is: 28,178.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,913.34 : 91,379.82 = 18,783.56 : x
  2. Step 2: Convert to fraction form
    60,913.34/91,379.82 = 18,783.56/x
  3. Step 3: Cross multiply
    60,913.34x = 91,379.82 × 18,783.56
  4. Step 4: Simplify right side
    60,913.34x = 1,716,438,331.76
  5. Step 5: Solve for x
    x = 1,716,438,331.76/60,913.34
  6. Step 6: Final answer
    x = 28,178.37

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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.