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Finding the Fourth Proportional to 66,212.92, 99,220.92 and 52,207.12

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Solution

The fourth proportional to 66,212.92, 99,220.92 and 52,207.12 is: 78,233.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,212.92 : 99,220.92 = 52,207.12 : x
  2. Step 2: Convert to fraction form
    66,212.92/99,220.92 = 52,207.12/x
  3. Step 3: Cross multiply
    66,212.92x = 99,220.92 × 52,207.12
  4. Step 4: Simplify right side
    66,212.92x = 5,180,038,476.95
  5. Step 5: Solve for x
    x = 5,180,038,476.95/66,212.92
  6. Step 6: Final answer
    x = 78,233.05

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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.