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Finding the Fourth Proportional to 66,149.93, 91,308.67 and 43,503.55

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Solution

The fourth proportional to 66,149.93, 91,308.67 and 43,503.55 is: 60,049.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,149.93 : 91,308.67 = 43,503.55 : x
  2. Step 2: Convert to fraction form
    66,149.93/91,308.67 = 43,503.55/x
  3. Step 3: Cross multiply
    66,149.93x = 91,308.67 × 43,503.55
  4. Step 4: Simplify right side
    66,149.93x = 3,972,250,953.75
  5. Step 5: Solve for x
    x = 3,972,250,953.75/66,149.93
  6. Step 6: Final answer
    x = 60,049.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.