Home / 52,113.20-78,169.80-28,785.20

Finding the Fourth Proportional to 52,113.20, 78,169.80 and 28,785.20

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Solution

The fourth proportional to 52,113.20, 78,169.80 and 28,785.20 is: 43,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,113.20 : 78,169.80 = 28,785.20 : x
  2. Step 2: Convert to fraction form
    52,113.20/78,169.80 = 28,785.20/x
  3. Step 3: Cross multiply
    52,113.20x = 78,169.80 × 28,785.20
  4. Step 4: Simplify right side
    52,113.20x = 2,250,133,326.96
  5. Step 5: Solve for x
    x = 2,250,133,326.96/52,113.20
  6. Step 6: Final answer
    x = 43,177.80

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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.