Home / 65,938.79-90,989.55-39,076.97

Finding the Fourth Proportional to 65,938.79, 90,989.55 and 39,076.97

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Solution

The fourth proportional to 65,938.79, 90,989.55 and 39,076.97 is: 53,922.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,938.79 : 90,989.55 = 39,076.97 : x
  2. Step 2: Convert to fraction form
    65,938.79/90,989.55 = 39,076.97/x
  3. Step 3: Cross multiply
    65,938.79x = 90,989.55 × 39,076.97
  4. Step 4: Simplify right side
    65,938.79x = 3,555,595,915.66
  5. Step 5: Solve for x
    x = 3,555,595,915.66/65,938.79
  6. Step 6: Final answer
    x = 53,922.67

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1.5x scale

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.