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Finding the Fourth Proportional to 65,622.84, 98,423.33 and 21,281.42

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Solution

The fourth proportional to 65,622.84, 98,423.33 and 21,281.42 is: 31,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,622.84 : 98,423.33 = 21,281.42 : x
  2. Step 2: Convert to fraction form
    65,622.84/98,423.33 = 21,281.42/x
  3. Step 3: Cross multiply
    65,622.84x = 98,423.33 × 21,281.42
  4. Step 4: Simplify right side
    65,622.84x = 2,094,587,625.00
  5. Step 5: Solve for x
    x = 2,094,587,625.00/65,622.84
  6. Step 6: Final answer
    x = 31,918.58

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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.