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Finding the Fourth Proportional to 45,320.40, 67,980.60 and 33,510.60

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Solution

The fourth proportional to 45,320.40, 67,980.60 and 33,510.60 is: 50,265.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,320.40 : 67,980.60 = 33,510.60 : x
  2. Step 2: Convert to fraction form
    45,320.40/67,980.60 = 33,510.60/x
  3. Step 3: Cross multiply
    45,320.40x = 67,980.60 × 33,510.60
  4. Step 4: Simplify right side
    45,320.40x = 2,278,070,694.36
  5. Step 5: Solve for x
    x = 2,278,070,694.36/45,320.40
  6. Step 6: Final answer
    x = 50,265.90

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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.