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Finding the Fourth Proportional to 68,637.60, 102,956.40 and 64,029.60

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Solution

The fourth proportional to 68,637.60, 102,956.40 and 64,029.60 is: 96,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,637.60 : 102,956.40 = 64,029.60 : x
  2. Step 2: Convert to fraction form
    68,637.60/102,956.40 = 64,029.60/x
  3. Step 3: Cross multiply
    68,637.60x = 102,956.40 × 64,029.60
  4. Step 4: Simplify right side
    68,637.60x = 6,592,257,109.44
  5. Step 5: Solve for x
    x = 6,592,257,109.44/68,637.60
  6. Step 6: Final answer
    x = 96,044.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.