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Finding the Fourth Proportional to 68,459.37, 93,787.62 and 65,900.78

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Solution

The fourth proportional to 68,459.37, 93,787.62 and 65,900.78 is: 90,282.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,459.37 : 93,787.62 = 65,900.78 : x
  2. Step 2: Convert to fraction form
    68,459.37/93,787.62 = 65,900.78/x
  3. Step 3: Cross multiply
    68,459.37x = 93,787.62 × 65,900.78
  4. Step 4: Simplify right side
    68,459.37x = 6,180,677,312.34
  5. Step 5: Solve for x
    x = 6,180,677,312.34/68,459.37
  6. Step 6: Final answer
    x = 90,282.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.