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Finding the Fourth Proportional to 65,432.16, 98,163.90 and 21,063.06

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Solution

The fourth proportional to 65,432.16, 98,163.90 and 21,063.06 is: 31,599.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,432.16 : 98,163.90 = 21,063.06 : x
  2. Step 2: Convert to fraction form
    65,432.16/98,163.90 = 21,063.06/x
  3. Step 3: Cross multiply
    65,432.16x = 98,163.90 × 21,063.06
  4. Step 4: Simplify right side
    65,432.16x = 2,067,632,115.53
  5. Step 5: Solve for x
    x = 2,067,632,115.53/65,432.16
  6. Step 6: Final answer
    x = 31,599.63

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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.