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Finding the Fourth Proportional to 73,307.40, 109,961.10 and 43,758.60

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Solution

The fourth proportional to 73,307.40, 109,961.10 and 43,758.60 is: 65,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,307.40 : 109,961.10 = 43,758.60 : x
  2. Step 2: Convert to fraction form
    73,307.40/109,961.10 = 43,758.60/x
  3. Step 3: Cross multiply
    73,307.40x = 109,961.10 × 43,758.60
  4. Step 4: Simplify right side
    73,307.40x = 4,811,743,790.46
  5. Step 5: Solve for x
    x = 4,811,743,790.46/73,307.40
  6. Step 6: Final answer
    x = 65,637.90

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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.