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Finding the Fourth Proportional to 68,763.51, 102,679.67 and 54,564.10

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Solution

The fourth proportional to 68,763.51, 102,679.67 and 54,564.10 is: 81,476.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,763.51 : 102,679.67 = 54,564.10 : x
  2. Step 2: Convert to fraction form
    68,763.51/102,679.67 = 54,564.10/x
  3. Step 3: Cross multiply
    68,763.51x = 102,679.67 × 54,564.10
  4. Step 4: Simplify right side
    68,763.51x = 5,602,623,661.56
  5. Step 5: Solve for x
    x = 5,602,623,661.56/68,763.51
  6. Step 6: Final answer
    x = 81,476.70

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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.