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Finding the Fourth Proportional to 68,798.43, 102,731.76 and 54,599.13

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Solution

The fourth proportional to 68,798.43, 102,731.76 and 54,599.13 is: 81,528.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,798.43 : 102,731.76 = 54,599.13 : x
  2. Step 2: Convert to fraction form
    68,798.43/102,731.76 = 54,599.13/x
  3. Step 3: Cross multiply
    68,798.43x = 102,731.76 × 54,599.13
  4. Step 4: Simplify right side
    68,798.43x = 5,609,064,719.37
  5. Step 5: Solve for x
    x = 5,609,064,719.37/68,798.43
  6. Step 6: Final answer
    x = 81,528.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.