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Finding the Fourth Proportional to 81,202.70, 121,802.71 and 24,276.74

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Solution

The fourth proportional to 81,202.70, 121,802.71 and 24,276.74 is: 36,414.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,202.70 : 121,802.71 = 24,276.74 : x
  2. Step 2: Convert to fraction form
    81,202.70/121,802.71 = 24,276.74/x
  3. Step 3: Cross multiply
    81,202.70x = 121,802.71 × 24,276.74
  4. Step 4: Simplify right side
    81,202.70x = 2,956,972,463.11
  5. Step 5: Solve for x
    x = 2,956,972,463.11/81,202.70
  6. Step 6: Final answer
    x = 36,414.71

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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.