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Finding the Fourth Proportional to 85,482.73, 117,982.46 and 56,359.96

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Solution

The fourth proportional to 85,482.73, 117,982.46 and 56,359.96 is: 77,787.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,482.73 : 117,982.46 = 56,359.96 : x
  2. Step 2: Convert to fraction form
    85,482.73/117,982.46 = 56,359.96/x
  3. Step 3: Cross multiply
    85,482.73x = 117,982.46 × 56,359.96
  4. Step 4: Simplify right side
    85,482.73x = 6,649,486,726.30
  5. Step 5: Solve for x
    x = 6,649,486,726.30/85,482.73
  6. Step 6: Final answer
    x = 77,787.49

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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.