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Finding the Fourth Proportional to 82,775.88, 124,120.92 and 40,637.16

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Solution

The fourth proportional to 82,775.88, 124,120.92 and 40,637.16 is: 60,934.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,775.88 : 124,120.92 = 40,637.16 : x
  2. Step 2: Convert to fraction form
    82,775.88/124,120.92 = 40,637.16/x
  3. Step 3: Cross multiply
    82,775.88x = 124,120.92 × 40,637.16
  4. Step 4: Simplify right side
    82,775.88x = 5,043,921,685.39
  5. Step 5: Solve for x
    x = 5,043,921,685.39/82,775.88
  6. Step 6: Final answer
    x = 60,934.68

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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.