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Finding the Fourth Proportional to 65,672.80, 98,522.16 and 18,926.08

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Solution

The fourth proportional to 65,672.80, 98,522.16 and 18,926.08 is: 28,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,672.80 : 98,522.16 = 18,926.08 : x
  2. Step 2: Convert to fraction form
    65,672.80/98,522.16 = 18,926.08/x
  3. Step 3: Cross multiply
    65,672.80x = 98,522.16 × 18,926.08
  4. Step 4: Simplify right side
    65,672.80x = 1,864,638,281.93
  5. Step 5: Solve for x
    x = 1,864,638,281.93/65,672.80
  6. Step 6: Final answer
    x = 28,392.85

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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.