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Finding the Fourth Proportional to 67,604.60, 101,409.43 and 20,220.31

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Solution

The fourth proportional to 67,604.60, 101,409.43 and 20,220.31 is: 30,331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,604.60 : 101,409.43 = 20,220.31 : x
  2. Step 2: Convert to fraction form
    67,604.60/101,409.43 = 20,220.31/x
  3. Step 3: Cross multiply
    67,604.60x = 101,409.43 × 20,220.31
  4. Step 4: Simplify right side
    67,604.60x = 2,050,529,807.45
  5. Step 5: Solve for x
    x = 2,050,529,807.45/67,604.60
  6. Step 6: Final answer
    x = 30,331.22

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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.