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Finding the Fourth Proportional to 66,962.40, 100,443.60 and 17,042.40

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Solution

The fourth proportional to 66,962.40, 100,443.60 and 17,042.40 is: 25,563.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,962.40 : 100,443.60 = 17,042.40 : x
  2. Step 2: Convert to fraction form
    66,962.40/100,443.60 = 17,042.40/x
  3. Step 3: Cross multiply
    66,962.40x = 100,443.60 × 17,042.40
  4. Step 4: Simplify right side
    66,962.40x = 1,711,800,008.64
  5. Step 5: Solve for x
    x = 1,711,800,008.64/66,962.40
  6. Step 6: Final answer
    x = 25,563.60

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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.