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Finding the Fourth Proportional to 67,884.80, 101,841.60 and 20,501.60

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Solution

The fourth proportional to 67,884.80, 101,841.60 and 20,501.60 is: 30,756.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,884.80 : 101,841.60 = 20,501.60 : x
  2. Step 2: Convert to fraction form
    67,884.80/101,841.60 = 20,501.60/x
  3. Step 3: Cross multiply
    67,884.80x = 101,841.60 × 20,501.60
  4. Step 4: Simplify right side
    67,884.80x = 2,087,915,746.56
  5. Step 5: Solve for x
    x = 2,087,915,746.56/67,884.80
  6. Step 6: Final answer
    x = 30,756.75

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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.