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Finding the Fourth Proportional to 68,878.67, 95,041.28 and 40,580.51

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Solution

The fourth proportional to 68,878.67, 95,041.28 and 40,580.51 is: 55,994.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,878.67 : 95,041.28 = 40,580.51 : x
  2. Step 2: Convert to fraction form
    68,878.67/95,041.28 = 40,580.51/x
  3. Step 3: Cross multiply
    68,878.67x = 95,041.28 × 40,580.51
  4. Step 4: Simplify right side
    68,878.67x = 3,856,823,239.70
  5. Step 5: Solve for x
    x = 3,856,823,239.70/68,878.67
  6. Step 6: Final answer
    x = 55,994.45

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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.