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Finding the Fourth Proportional to 66,138.35, 91,266.21 and 37,460.90

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Solution

The fourth proportional to 66,138.35, 91,266.21 and 37,460.90 is: 51,693.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,138.35 : 91,266.21 = 37,460.90 : x
  2. Step 2: Convert to fraction form
    66,138.35/91,266.21 = 37,460.90/x
  3. Step 3: Cross multiply
    66,138.35x = 91,266.21 × 37,460.90
  4. Step 4: Simplify right side
    66,138.35x = 3,418,914,594.35
  5. Step 5: Solve for x
    x = 3,418,914,594.35/66,138.35
  6. Step 6: Final answer
    x = 51,693.38

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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.