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Finding the Fourth Proportional to 67,115.25, 100,673.48 and 20,368.13

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Solution

The fourth proportional to 67,115.25, 100,673.48 and 20,368.13 is: 30,552.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,115.25 : 100,673.48 = 20,368.13 : x
  2. Step 2: Convert to fraction form
    67,115.25/100,673.48 = 20,368.13/x
  3. Step 3: Cross multiply
    67,115.25x = 100,673.48 × 20,368.13
  4. Step 4: Simplify right side
    67,115.25x = 2,050,530,075.75
  5. Step 5: Solve for x
    x = 2,050,530,075.75/67,115.25
  6. Step 6: Final answer
    x = 30,552.37

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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.