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Finding the Fourth Proportional to 66,734.40, 100,101.60 and 65,422.20

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Solution

The fourth proportional to 66,734.40, 100,101.60 and 65,422.20 is: 98,133.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,734.40 : 100,101.60 = 65,422.20 : x
  2. Step 2: Convert to fraction form
    66,734.40/100,101.60 = 65,422.20/x
  3. Step 3: Cross multiply
    66,734.40x = 100,101.60 × 65,422.20
  4. Step 4: Simplify right side
    66,734.40x = 6,548,866,895.52
  5. Step 5: Solve for x
    x = 6,548,866,895.52/66,734.40
  6. Step 6: Final answer
    x = 98,133.30

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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.