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Finding the Fourth Proportional to 65,775.85, 98,664.99 and 21,402.43

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Solution

The fourth proportional to 65,775.85, 98,664.99 and 21,402.43 is: 32,104.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,775.85 : 98,664.99 = 21,402.43 : x
  2. Step 2: Convert to fraction form
    65,775.85/98,664.99 = 21,402.43/x
  3. Step 3: Cross multiply
    65,775.85x = 98,664.99 × 21,402.43
  4. Step 4: Simplify right side
    65,775.85x = 2,111,670,215.00
  5. Step 5: Solve for x
    x = 2,111,670,215.00/65,775.85
  6. Step 6: Final answer
    x = 32,104.04

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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.