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Finding the Fourth Proportional to 68,874.96, 95,029.92 and 42,015.72

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Solution

The fourth proportional to 68,874.96, 95,029.92 and 42,015.72 is: 57,971.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,874.96 : 95,029.92 = 42,015.72 : x
  2. Step 2: Convert to fraction form
    68,874.96/95,029.92 = 42,015.72/x
  3. Step 3: Cross multiply
    68,874.96x = 95,029.92 × 42,015.72
  4. Step 4: Simplify right side
    68,874.96x = 3,992,750,510.34
  5. Step 5: Solve for x
    x = 3,992,750,510.34/68,874.96
  6. Step 6: Final answer
    x = 57,971.00

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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.