Home / 85,215,059.20-127,747,939.20-51,149,958.40

Finding the Fourth Proportional to 85,215,059.20, 127,747,939.20 and 51,149,958.40

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Solution

The fourth proportional to 85,215,059.20, 127,747,939.20 and 51,149,958.40 is: 76,680,129.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,215,059.20 : 127,747,939.20 = 51,149,958.40 : x
  2. Step 2: Convert to fraction form
    85,215,059.20/127,747,939.20 = 51,149,958.40/x
  3. Step 3: Cross multiply
    85,215,059.20x = 127,747,939.20 × 51,149,958.40
  4. Step 4: Simplify right side
    85,215,059.20x = 6,534,301,775,765,729
  5. Step 5: Solve for x
    x = 6,534,301,775,765,729/85,215,059.20
  6. Step 6: Final answer
    x = 76,680,129.51

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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.