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Finding the Fourth Proportional to 65,999.20, 98,998.80 and 21,627.40

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Solution

The fourth proportional to 65,999.20, 98,998.80 and 21,627.40 is: 32,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,999.20 : 98,998.80 = 21,627.40 : x
  2. Step 2: Convert to fraction form
    65,999.20/98,998.80 = 21,627.40/x
  3. Step 3: Cross multiply
    65,999.20x = 98,998.80 × 21,627.40
  4. Step 4: Simplify right side
    65,999.20x = 2,141,086,647.12
  5. Step 5: Solve for x
    x = 2,141,086,647.12/65,999.20
  6. Step 6: Final answer
    x = 32,441.10

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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.