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Finding the Fourth Proportional to 82,755.40, 124,184.40 and 43,340.80

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Solution

The fourth proportional to 82,755.40, 124,184.40 and 43,340.80 is: 65,038.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,755.40 : 124,184.40 = 43,340.80 : x
  2. Step 2: Convert to fraction form
    82,755.40/124,184.40 = 43,340.80/x
  3. Step 3: Cross multiply
    82,755.40x = 124,184.40 × 43,340.80
  4. Step 4: Simplify right side
    82,755.40x = 5,382,251,243.52
  5. Step 5: Solve for x
    x = 5,382,251,243.52/82,755.40
  6. Step 6: Final answer
    x = 65,038.07

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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.