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Finding the Fourth Proportional to 52,756.80, 72,820.80 and 43,425.60

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Solution

The fourth proportional to 52,756.80, 72,820.80 and 43,425.60 is: 59,940.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,756.80 : 72,820.80 = 43,425.60 : x
  2. Step 2: Convert to fraction form
    52,756.80/72,820.80 = 43,425.60/x
  3. Step 3: Cross multiply
    52,756.80x = 72,820.80 × 43,425.60
  4. Step 4: Simplify right side
    52,756.80x = 3,162,286,932.48
  5. Step 5: Solve for x
    x = 3,162,286,932.48/52,756.80
  6. Step 6: Final answer
    x = 59,940.84

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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.