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Finding the Fourth Proportional to 67,007.90, 100,511.85 and 20,254.70

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Solution

The fourth proportional to 67,007.90, 100,511.85 and 20,254.70 is: 30,382.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,007.90 : 100,511.85 = 20,254.70 : x
  2. Step 2: Convert to fraction form
    67,007.90/100,511.85 = 20,254.70/x
  3. Step 3: Cross multiply
    67,007.90x = 100,511.85 × 20,254.70
  4. Step 4: Simplify right side
    67,007.90x = 2,035,837,368.20
  5. Step 5: Solve for x
    x = 2,035,837,368.20/67,007.90
  6. Step 6: Final answer
    x = 30,382.05

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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.