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Finding the Fourth Proportional to 81,715.79, 112,755.51 and 45,898.94

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Solution

The fourth proportional to 81,715.79, 112,755.51 and 45,898.94 is: 63,333.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,715.79 : 112,755.51 = 45,898.94 : x
  2. Step 2: Convert to fraction form
    81,715.79/112,755.51 = 45,898.94/x
  3. Step 3: Cross multiply
    81,715.79x = 112,755.51 × 45,898.94
  4. Step 4: Simplify right side
    81,715.79x = 5,175,358,388.16
  5. Step 5: Solve for x
    x = 5,175,358,388.16/81,715.79
  6. Step 6: Final answer
    x = 63,333.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.