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Finding the Fourth Proportional to 65,350.70, 98,016.78 and 20,971.71

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Solution

The fourth proportional to 65,350.70, 98,016.78 and 20,971.71 is: 31,454.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,350.70 : 98,016.78 = 20,971.71 : x
  2. Step 2: Convert to fraction form
    65,350.70/98,016.78 = 20,971.71/x
  3. Step 3: Cross multiply
    65,350.70x = 98,016.78 × 20,971.71
  4. Step 4: Simplify right side
    65,350.70x = 2,055,579,485.29
  5. Step 5: Solve for x
    x = 2,055,579,485.29/65,350.70
  6. Step 6: Final answer
    x = 31,454.59

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1.5x scale

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.