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Finding the Fourth Proportional to 65,673.92, 98,526.60 and 21,300.80

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Solution

The fourth proportional to 65,673.92, 98,526.60 and 21,300.80 is: 31,956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,673.92 : 98,526.60 = 21,300.80 : x
  2. Step 2: Convert to fraction form
    65,673.92/98,526.60 = 21,300.80/x
  3. Step 3: Cross multiply
    65,673.92x = 98,526.60 × 21,300.80
  4. Step 4: Simplify right side
    65,673.92x = 2,098,695,401.28
  5. Step 5: Solve for x
    x = 2,098,695,401.28/65,673.92
  6. Step 6: Final answer
    x = 31,956.30

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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.