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Finding the Fourth Proportional to 82,785.40, 124,182.90 and 23,625.40

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Solution

The fourth proportional to 82,785.40, 124,182.90 and 23,625.40 is: 35,439.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,785.40 : 124,182.90 = 23,625.40 : x
  2. Step 2: Convert to fraction form
    82,785.40/124,182.90 = 23,625.40/x
  3. Step 3: Cross multiply
    82,785.40x = 124,182.90 × 23,625.40
  4. Step 4: Simplify right side
    82,785.40x = 2,933,870,685.66
  5. Step 5: Solve for x
    x = 2,933,870,685.66/82,785.40
  6. Step 6: Final answer
    x = 35,439.47

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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.