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Finding the Fourth Proportional to 66,354.50, 99,531.75 and 17,106.50

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Solution

The fourth proportional to 66,354.50, 99,531.75 and 17,106.50 is: 25,659.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,354.50 : 99,531.75 = 17,106.50 : x
  2. Step 2: Convert to fraction form
    66,354.50/99,531.75 = 17,106.50/x
  3. Step 3: Cross multiply
    66,354.50x = 99,531.75 × 17,106.50
  4. Step 4: Simplify right side
    66,354.50x = 1,702,639,881.38
  5. Step 5: Solve for x
    x = 1,702,639,881.38/66,354.50
  6. Step 6: Final answer
    x = 25,659.75

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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.