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Finding the Fourth Proportional to 68,885.54, 95,076.05 and 39,815.15

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Solution

The fourth proportional to 68,885.54, 95,076.05 and 39,815.15 is: 54,953.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,885.54 : 95,076.05 = 39,815.15 : x
  2. Step 2: Convert to fraction form
    68,885.54/95,076.05 = 39,815.15/x
  3. Step 3: Cross multiply
    68,885.54x = 95,076.05 × 39,815.15
  4. Step 4: Simplify right side
    68,885.54x = 3,785,467,230.77
  5. Step 5: Solve for x
    x = 3,785,467,230.77/68,885.54
  6. Step 6: Final answer
    x = 54,953.00

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1.5x scale

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.