Home / 66,450.60-99,704.70-31,372.20

Finding the Fourth Proportional to 66,450.60, 99,704.70 and 31,372.20

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Solution

The fourth proportional to 66,450.60, 99,704.70 and 31,372.20 is: 47,071.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,450.60 : 99,704.70 = 31,372.20 : x
  2. Step 2: Convert to fraction form
    66,450.60/99,704.70 = 31,372.20/x
  3. Step 3: Cross multiply
    66,450.60x = 99,704.70 × 31,372.20
  4. Step 4: Simplify right side
    66,450.60x = 3,127,955,789.34
  5. Step 5: Solve for x
    x = 3,127,955,789.34/66,450.60
  6. Step 6: Final answer
    x = 47,071.90

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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.