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Finding the Fourth Proportional to 117,807.60, 162,562.32 and 66,810

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Solution

The fourth proportional to 117,807.60, 162,562.32 and 66,810 is: 92,190.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,807.60 : 162,562.32 = 66,810 : x
  2. Step 2: Convert to fraction form
    117,807.60/162,562.32 = 66,810/x
  3. Step 3: Cross multiply
    117,807.60x = 162,562.32 × 66,810
  4. Step 4: Simplify right side
    117,807.60x = 10,860,788,599.20
  5. Step 5: Solve for x
    x = 10,860,788,599.20/117,807.60
  6. Step 6: Final answer
    x = 92,190.90

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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.