Home / 81,029.43-121,557.10-34,282.71

Finding the Fourth Proportional to 81,029.43, 121,557.10 and 34,282.71

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Solution

The fourth proportional to 81,029.43, 121,557.10 and 34,282.71 is: 51,429.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,029.43 : 121,557.10 = 34,282.71 : x
  2. Step 2: Convert to fraction form
    81,029.43/121,557.10 = 34,282.71/x
  3. Step 3: Cross multiply
    81,029.43x = 121,557.10 × 34,282.71
  4. Step 4: Simplify right side
    81,029.43x = 4,167,306,807.74
  5. Step 5: Solve for x
    x = 4,167,306,807.74/81,029.43
  6. Step 6: Final answer
    x = 51,429.55

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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.