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Finding the Fourth Proportional to 82,240.40, 123,288.60 and 55,859.60

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Solution

The fourth proportional to 82,240.40, 123,288.60 and 55,859.60 is: 83,740.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,240.40 : 123,288.60 = 55,859.60 : x
  2. Step 2: Convert to fraction form
    82,240.40/123,288.60 = 55,859.60/x
  3. Step 3: Cross multiply
    82,240.40x = 123,288.60 × 55,859.60
  4. Step 4: Simplify right side
    82,240.40x = 6,886,851,880.56
  5. Step 5: Solve for x
    x = 6,886,851,880.56/82,240.40
  6. Step 6: Final answer
    x = 83,740.50

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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.