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Finding the Fourth Proportional to 68,712.64, 95,014.32 and 54,540.88

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Solution

The fourth proportional to 68,712.64, 95,014.32 and 54,540.88 is: 75,417.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,712.64 : 95,014.32 = 54,540.88 : x
  2. Step 2: Convert to fraction form
    68,712.64/95,014.32 = 54,540.88/x
  3. Step 3: Cross multiply
    68,712.64x = 95,014.32 × 54,540.88
  4. Step 4: Simplify right side
    68,712.64x = 5,182,164,625.40
  5. Step 5: Solve for x
    x = 5,182,164,625.40/68,712.64
  6. Step 6: Final answer
    x = 75,417.92

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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.