Home / 65,078,512.85-89,801,806.56-38,972,359.46

Finding the Fourth Proportional to 65,078,512.85, 89,801,806.56 and 38,972,359.46

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Solution

The fourth proportional to 65,078,512.85, 89,801,806.56 and 38,972,359.46 is: 53,777,938.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,078,512.85 : 89,801,806.56 = 38,972,359.46 : x
  2. Step 2: Convert to fraction form
    65,078,512.85/89,801,806.56 = 38,972,359.46/x
  3. Step 3: Cross multiply
    65,078,512.85x = 89,801,806.56 × 38,972,359.46
  4. Step 4: Simplify right side
    65,078,512.85x = 3,499,788,284,964,697
  5. Step 5: Solve for x
    x = 3,499,788,284,964,697/65,078,512.85
  6. Step 6: Final answer
    x = 53,777,938.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.