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Finding the Fourth Proportional to 67,263.32, 100,894.98 and 20,515.80

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Solution

The fourth proportional to 67,263.32, 100,894.98 and 20,515.80 is: 30,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,263.32 : 100,894.98 = 20,515.80 : x
  2. Step 2: Convert to fraction form
    67,263.32/100,894.98 = 20,515.80/x
  3. Step 3: Cross multiply
    67,263.32x = 100,894.98 × 20,515.80
  4. Step 4: Simplify right side
    67,263.32x = 2,069,941,230.68
  5. Step 5: Solve for x
    x = 2,069,941,230.68/67,263.32
  6. Step 6: Final answer
    x = 30,773.70

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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.