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Finding the Fourth Proportional to 67,275.20, 100,912.80 and 43,774.40

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Solution

The fourth proportional to 67,275.20, 100,912.80 and 43,774.40 is: 65,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,275.20 : 100,912.80 = 43,774.40 : x
  2. Step 2: Convert to fraction form
    67,275.20/100,912.80 = 43,774.40/x
  3. Step 3: Cross multiply
    67,275.20x = 100,912.80 × 43,774.40
  4. Step 4: Simplify right side
    67,275.20x = 4,417,397,272.32
  5. Step 5: Solve for x
    x = 4,417,397,272.32/67,275.20
  6. Step 6: Final answer
    x = 65,661.60

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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.