Home / 81,226.71-121,827.51-31,330.17

Finding the Fourth Proportional to 81,226.71, 121,827.51 and 31,330.17

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Solution

The fourth proportional to 81,226.71, 121,827.51 and 31,330.17 is: 46,990.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,226.71 : 121,827.51 = 31,330.17 : x
  2. Step 2: Convert to fraction form
    81,226.71/121,827.51 = 31,330.17/x
  3. Step 3: Cross multiply
    81,226.71x = 121,827.51 × 31,330.17
  4. Step 4: Simplify right side
    81,226.71x = 3,816,876,598.98
  5. Step 5: Solve for x
    x = 3,816,876,598.98/81,226.71
  6. Step 6: Final answer
    x = 46,990.41

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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.