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Finding the Fourth Proportional to 66,967.50, 100,451.25 and 52,187.49

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Solution

The fourth proportional to 66,967.50, 100,451.25 and 52,187.49 is: 78,281.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,967.50 : 100,451.25 = 52,187.49 : x
  2. Step 2: Convert to fraction form
    66,967.50/100,451.25 = 52,187.49/x
  3. Step 3: Cross multiply
    66,967.50x = 100,451.25 × 52,187.49
  4. Step 4: Simplify right side
    66,967.50x = 5,242,298,604.86
  5. Step 5: Solve for x
    x = 5,242,298,604.86/66,967.50
  6. Step 6: Final answer
    x = 78,281.24

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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.