Home / 65,921.20-90,971.28-35,706.43

Finding the Fourth Proportional to 65,921.20, 90,971.28 and 35,706.43

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Solution

The fourth proportional to 65,921.20, 90,971.28 and 35,706.43 is: 49,274.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,921.20 : 90,971.28 = 35,706.43 : x
  2. Step 2: Convert to fraction form
    65,921.20/90,971.28 = 35,706.43/x
  3. Step 3: Cross multiply
    65,921.20x = 90,971.28 × 35,706.43
  4. Step 4: Simplify right side
    65,921.20x = 3,248,259,789.59
  5. Step 5: Solve for x
    x = 3,248,259,789.59/65,921.20
  6. Step 6: Final answer
    x = 49,274.89

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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.