Home / 52,139.52-78,193.20-18,855.60

Finding the Fourth Proportional to 52,139.52, 78,193.20 and 18,855.60

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Solution

The fourth proportional to 52,139.52, 78,193.20 and 18,855.60 is: 28,277.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,139.52 : 78,193.20 = 18,855.60 : x
  2. Step 2: Convert to fraction form
    52,139.52/78,193.20 = 18,855.60/x
  3. Step 3: Cross multiply
    52,139.52x = 78,193.20 × 18,855.60
  4. Step 4: Simplify right side
    52,139.52x = 1,474,379,701.92
  5. Step 5: Solve for x
    x = 1,474,379,701.92/52,139.52
  6. Step 6: Final answer
    x = 28,277.58

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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.