Home / 81,274.47-121,632.41-51,274.91

Finding the Fourth Proportional to 81,274.47, 121,632.41 and 51,274.91

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Solution

The fourth proportional to 81,274.47, 121,632.41 and 51,274.91 is: 76,736.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,274.47 : 121,632.41 = 51,274.91 : x
  2. Step 2: Convert to fraction form
    81,274.47/121,632.41 = 51,274.91/x
  3. Step 3: Cross multiply
    81,274.47x = 121,632.41 × 51,274.91
  4. Step 4: Simplify right side
    81,274.47x = 6,236,690,011.30
  5. Step 5: Solve for x
    x = 6,236,690,011.30/81,274.47
  6. Step 6: Final answer
    x = 76,736.15

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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.