Home / 52,148.20-78,164.70-28,791.40

Finding the Fourth Proportional to 52,148.20, 78,164.70 and 28,791.40

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Solution

The fourth proportional to 52,148.20, 78,164.70 and 28,791.40 is: 43,155.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,148.20 : 78,164.70 = 28,791.40 : x
  2. Step 2: Convert to fraction form
    52,148.20/78,164.70 = 28,791.40/x
  3. Step 3: Cross multiply
    52,148.20x = 78,164.70 × 28,791.40
  4. Step 4: Simplify right side
    52,148.20x = 2,250,471,143.58
  5. Step 5: Solve for x
    x = 2,250,471,143.58/52,148.20
  6. Step 6: Final answer
    x = 43,155.30

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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.