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Finding the Fourth Proportional to 67,648.80, 101,473.20 and 20,901.60

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Solution

The fourth proportional to 67,648.80, 101,473.20 and 20,901.60 is: 31,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,648.80 : 101,473.20 = 20,901.60 : x
  2. Step 2: Convert to fraction form
    67,648.80/101,473.20 = 20,901.60/x
  3. Step 3: Cross multiply
    67,648.80x = 101,473.20 × 20,901.60
  4. Step 4: Simplify right side
    67,648.80x = 2,120,952,237.12
  5. Step 5: Solve for x
    x = 2,120,952,237.12/67,648.80
  6. Step 6: Final answer
    x = 31,352.40

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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.