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Finding the Fourth Proportional to 52,755.37, 79,140.87 and 15,315.75

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Solution

The fourth proportional to 52,755.37, 79,140.87 and 15,315.75 is: 22,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,755.37 : 79,140.87 = 15,315.75 : x
  2. Step 2: Convert to fraction form
    52,755.37/79,140.87 = 15,315.75/x
  3. Step 3: Cross multiply
    52,755.37x = 79,140.87 × 15,315.75
  4. Step 4: Simplify right side
    52,755.37x = 1,212,101,779.70
  5. Step 5: Solve for x
    x = 1,212,101,779.70/52,755.37
  6. Step 6: Final answer
    x = 22,975.90

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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.