Home / 65,821.64-98,742.71-21,438.07

Finding the Fourth Proportional to 65,821.64, 98,742.71 and 21,438.07

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Solution

The fourth proportional to 65,821.64, 98,742.71 and 21,438.07 is: 32,160.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,821.64 : 98,742.71 = 21,438.07 : x
  2. Step 2: Convert to fraction form
    65,821.64/98,742.71 = 21,438.07/x
  3. Step 3: Cross multiply
    65,821.64x = 98,742.71 × 21,438.07
  4. Step 4: Simplify right side
    65,821.64x = 2,116,853,128.97
  5. Step 5: Solve for x
    x = 2,116,853,128.97/65,821.64
  6. Step 6: Final answer
    x = 32,160.44

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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.