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Finding the Fourth Proportional to 82,470.40, 123,685.80 and 23,311.60

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Solution

The fourth proportional to 82,470.40, 123,685.80 and 23,311.60 is: 34,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,470.40 : 123,685.80 = 23,311.60 : x
  2. Step 2: Convert to fraction form
    82,470.40/123,685.80 = 23,311.60/x
  3. Step 3: Cross multiply
    82,470.40x = 123,685.80 × 23,311.60
  4. Step 4: Simplify right side
    82,470.40x = 2,883,313,895.28
  5. Step 5: Solve for x
    x = 2,883,313,895.28/82,470.40
  6. Step 6: Final answer
    x = 34,961.80

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1.5x scale

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.