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Finding the Fourth Proportional to 66,000.60, 98,855.10 and 51,161.40

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Solution

The fourth proportional to 66,000.60, 98,855.10 and 51,161.40 is: 76,629.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,000.60 : 98,855.10 = 51,161.40 : x
  2. Step 2: Convert to fraction form
    66,000.60/98,855.10 = 51,161.40/x
  3. Step 3: Cross multiply
    66,000.60x = 98,855.10 × 51,161.40
  4. Step 4: Simplify right side
    66,000.60x = 5,057,565,313.14
  5. Step 5: Solve for x
    x = 5,057,565,313.14/66,000.60
  6. Step 6: Final answer
    x = 76,629.08

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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.