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Finding the Fourth Proportional to 65,808.03, 98,701.71 and 21,434.41

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Solution

The fourth proportional to 65,808.03, 98,701.71 and 21,434.41 is: 32,148.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,808.03 : 98,701.71 = 21,434.41 : x
  2. Step 2: Convert to fraction form
    65,808.03/98,701.71 = 21,434.41/x
  3. Step 3: Cross multiply
    65,808.03x = 98,701.71 × 21,434.41
  4. Step 4: Simplify right side
    65,808.03x = 2,115,612,919.84
  5. Step 5: Solve for x
    x = 2,115,612,919.84/65,808.03
  6. Step 6: Final answer
    x = 32,148.25

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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.