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Finding the Fourth Proportional to 42,372.50, 63,559.11 and 10,782.60

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Solution

The fourth proportional to 42,372.50, 63,559.11 and 10,782.60 is: 16,173.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,372.50 : 63,559.11 = 10,782.60 : x
  2. Step 2: Convert to fraction form
    42,372.50/63,559.11 = 10,782.60/x
  3. Step 3: Cross multiply
    42,372.50x = 63,559.11 × 10,782.60
  4. Step 4: Simplify right side
    42,372.50x = 685,332,459.49
  5. Step 5: Solve for x
    x = 685,332,459.49/42,372.50
  6. Step 6: Final answer
    x = 16,173.99

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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.