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Finding the Fourth Proportional to 66,602.93, 91,912.05 and 38,308.62

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Solution

The fourth proportional to 66,602.93, 91,912.05 and 38,308.62 is: 52,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,602.93 : 91,912.05 = 38,308.62 : x
  2. Step 2: Convert to fraction form
    66,602.93/91,912.05 = 38,308.62/x
  3. Step 3: Cross multiply
    66,602.93x = 91,912.05 × 38,308.62
  4. Step 4: Simplify right side
    66,602.93x = 3,521,023,796.87
  5. Step 5: Solve for x
    x = 3,521,023,796.87/66,602.93
  6. Step 6: Final answer
    x = 52,865.90

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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.