Home / 52,782.20-72,840.61-30,120.74

Finding the Fourth Proportional to 52,782.20, 72,840.61 and 30,120.74

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Solution

The fourth proportional to 52,782.20, 72,840.61 and 30,120.74 is: 41,567.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,782.20 : 72,840.61 = 30,120.74 : x
  2. Step 2: Convert to fraction form
    52,782.20/72,840.61 = 30,120.74/x
  3. Step 3: Cross multiply
    52,782.20x = 72,840.61 × 30,120.74
  4. Step 4: Simplify right side
    52,782.20x = 2,194,012,711.05
  5. Step 5: Solve for x
    x = 2,194,012,711.05/52,782.20
  6. Step 6: Final answer
    x = 41,567.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.