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Finding the Fourth Proportional to 82,253.80, 123,438.30 and 52,743.40

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Solution

The fourth proportional to 82,253.80, 123,438.30 and 52,743.40 is: 79,152.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,253.80 : 123,438.30 = 52,743.40 : x
  2. Step 2: Convert to fraction form
    82,253.80/123,438.30 = 52,743.40/x
  3. Step 3: Cross multiply
    82,253.80x = 123,438.30 × 52,743.40
  4. Step 4: Simplify right side
    82,253.80x = 6,510,555,632.22
  5. Step 5: Solve for x
    x = 6,510,555,632.22/82,253.80
  6. Step 6: Final answer
    x = 79,152.03

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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.