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Finding the Fourth Proportional to 76,003.40, 114,005.10 and 74,966.60

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Solution

The fourth proportional to 76,003.40, 114,005.10 and 74,966.60 is: 112,449.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,003.40 : 114,005.10 = 74,966.60 : x
  2. Step 2: Convert to fraction form
    76,003.40/114,005.10 = 74,966.60/x
  3. Step 3: Cross multiply
    76,003.40x = 114,005.10 × 74,966.60
  4. Step 4: Simplify right side
    76,003.40x = 8,546,574,729.66
  5. Step 5: Solve for x
    x = 8,546,574,729.66/76,003.40
  6. Step 6: Final answer
    x = 112,449.90

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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.